The formula used to calculate the circle diameter is: ø = 2 x √(A / π) Symbols. If you don't have the radius or the circumference, divide the area of the circle by π and then find … To graph a circle, visit the circle graphing calculator (choose the "Implicit" option). Also, it can find equation of a circle given its center and radius. Circular segment - is an area of a circle which is "cut off" from the rest of the circle by a secant (chord).. On the picture: L - arc length h- height c- chord R- radius a- angle. 10.21, AOB is a diameter of the circle and C, D, E are any three points on the semi-circle. Sphere volume to diameter calculator; Sphere surface area to diameter calculator; User Guide. Example 2 If a circle Calculate the area, circumference, radius and diameter of circles. To calculate the area of a circle we use the formula: π x (diameter/2) 2. Diameter calculator works according to the above-given formula. Diameter The length of a straight line that intersects the center point of the circle and reaches to each side of the boundary. Calculate project cost based on price per cubic foot, cubic yard or cubic meter. For example, if the radius is 5 inches, then using the first area formula calculate π x 5 2 = 3.14159 x 25 = 78.54 sq in. Substitute this value to the formula for circumference: C = 2 * π * R = 2 * π * 14 = 87.9646 cm. Use these calculators to find the PCD (pitch circle diameter) of a series of holes if you have a very large PCD or an odd number of holes (where you cannot measure over opposing holes). Live Demo In this example, you will learn about C++ program to find area of the circle with and without using the function.. Symbols. Just input the circumference value in the input field and the diameter of a circle from circumference calculator will automatically update you with the circle diameter. To calculate the circumference of a circle, use the formula C = πd, where "C" is the circumference, "d" is the diameter, and π is 3.14. […] The distance around a circle (i.e) its perimeter gives you the circumference. Let’s calculate the are of the circle using two methods. Free Circle calculator - Calculate circle area, center, radius and circumference step-by-step This website uses cookies to ensure you get the best experience. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as long as they are exactly 180 degrees apart. For those having difficulty using formulas manually to find the area, circumference, radius and diameter of a circle, this circle calculator is just for you. Find A, C, r and d of a circle. d = diameter of circle C = circumference of cirles For more detail, you can see table below : 1. Explore many other math calculators like the area and surface area calculators, as well as hundreds of other calculators related to finance, health, fitness, and more. Calculate A, C and r | Given d. Finally, you can find the diameter - it is simply double the radius: D = 2 * R = 2 * 14 = 28 cm. The formula for working out the circumference of a circle is: Circumference of circle = π x Diameter of circle The formula: Area of a Circle = π x (Diameter/2)^2 π = 3.142 Get the result. If you know the diameter and not the radius, simply divide the diameter by 2 to get the radius and still use the formula above. The calculator does the rest. Just enter the value of the circumference. Calculate volume from your measurements in inches (in), feet (ft), yards (yd), centimeters (cm), or meters (m). If you know the diameter If you know the diameter of a circle, the circumference can be found using the formula where: D is the diameter of the circle π is Pi, approximately 3.142 See also Derivation of circumference formula If you https://www.calculatorsoup.com - Online Calculators. If you know radius and angle you may use the following formulas to calculate remaining segment parameters: Circle formulas and geometric shape of a circle. A diameter is just two radiuses drawn in opposing directions from the circle's origin. Let's assume it's equal to 14 cm. The radius is the distance from the … This circumference to diameter calculator is used to find the diameter of a circle given its circumference. If by the "length" of a circle, you mean the perimeter of or the circumference of, i.e., the distance around, a circle, then the formula for finding the circumference C of a circle is found as follows: (1.) First assign a meaningful name to all the three functions. Calculate Disc/Circle measurements Calculate the Radius, Diameter, Circumference and Surface area of a Disc/Circle. Also, it can find equation of a circle given its center and radius. Task 2: Find the area of a circle given its diameter is 12 cm. By using this website, you agree to our Cookie Policy. The circle calculator finds the area, radius, diameter and circumference of a circle labeled as a, r, d and c respectively. The perimeter of a circle is called the circumference. Here you can find calculation perimeter of circle, circumference or calculation area of circle and disc, length of disc formula. Determine the depth of your material, say mulch, that you will put on this area generally using depth in inches, If you measured in feet only skip to "Calculate", If you measured in feet & inches, divide inches by 12 and add that to your feet measure to get total feet, If you measured in inches only, divide inches by 12 and that is your measurement in feet, Calculate your volume: Multiply area times the depth, this will be volume in cubic feet, Calculate your cubic yards: Divide cubic feet by 27 to convert to cubic yards and this is your answer. Note: The ratio of circumference to diameter is approximately the same around 3.142. i.e. Putting A, r and d in terms of C the equations are: r = C 2 π. We can see that \(AFB\) is the diameter. If you know the radius of the circle, double it to get the diameter. Suppose you only know the diameter? By using this website, you agree to our Cookie Policy. Create table data a. Numbers in C++ Normally, when we work with Numbers, we use primitive data types such as int, short, long, float and double, etc. C++ Program to Find Circumference of Circle. Given any 1 known variable of a circle, calculate the other 3 unknowns. Circumference of a circle formula. If you prefer a numerical value, the answer rounded to the nearest tenth is 37.7 cm. Obviously, the Circle Border and Annulus are the same, just measured differently. Enter one known value of a circle and calculate the area, circumference, radius or diameter.You will get solution with step-by-step explanation. See below some definitions related to the formulas: Circumference Circumference is the linear radius of circle to calculate output. You can also select units of measure for both input data and results. Article Summary X To calculate the diameter of a circle, multiply the radius by 2. You can also To find the area of a circle using radius. A circle has a diameter of 10 m. What is its circumference / perimeter? Simply input the information you know and the rest will be computed for you nearly instantly. How to find diameter, circumference and area of a circle using function in C programming. For an example, we … Circular segment. Two calculators are provided, the first if you can insert pins into the holes and the second if you can measure the holes directly. A = Circle area; π = Pi = 3.14159… ø = Circle diameter; Diameter of Circle. The word has been derived from the Latin word circumferre means to carry around. getcalc.com's Circle Calculator is an online basic geometry tool to calculate area, circumference, diameter or radius of a circle shape, in both US customary & metric (SI) units. How to use the Calculator: Insert the Diameter to calculate the Radius or input the Radius to find the Diameter; Either insert the Angle of the Arc or insert the length; So, by carrying out either of the two foregoing operations, the user will be able to find the Arc of a Circle quickly and without any difficulties. Free Circle Diameter calculator - Calculate circle diameter given equation step-by-step This website uses cookies to ensure you get the best experience. If JavaScript is not working on your browser, or in case you are simply curious, here is the procedure for calculating the diameter of a circle from its area. For example, if you have one measurement that is 7'3" you can enter that as 7.25 feet (3"/12" = 0.25 ft). That is to say, you can find the circumference of a … The diameter should be measured in feet (ft) for square footage calculations and if needed, converted to inches (in), yards (yd), centimetres (cm), millimetres (mm) and metres (m). The area of a circle with diameter of 4 is equal to 12.57. The formula used to calculate the area is (π*r 2) or {(π*d 2)/4}. Circle Calculator Calculations at a circle. A circle is a shape with all points at the boundary having the same distance to the centre. The circle calculator finds the area, radius, diameter and circumference of a circle labeled as a, r, d and c respectively. Also, AC is a diameter of semicircle ABC, and CE is a diameter of semicircle CDE, as shown in the The next equations show how you can instead find the diameter from them. If you wish to know the diameter from the area, follow the procedure above but double the result you get for r. This is because the diameter is twice the length of the radius. Let’s calculate one manually, for example. Where: π is approximately equal to 3.14. Also calculate the cost of materials when you enter the price per cubic foot, price per cubic yard or price per cubic meter. Diameter of Circle Enter the diameter of a circle. © 2006 -2021CalculatorSoup® This calculator will find either the equation of the circle from the given parameters or the center, radius, diameter, area, circumference (perimeter), eccentricity, linear eccentricity, x-intercepts, y-intercepts, domain, and range of the entered circle. Twice the length of a circle's radius The diameter of a circle calculator uses the following equation: Area of a circle = π * (d/2) 2. Enter dimensions in US units (inches or feet) or metric units (centimeters or meters) to calculate the cubic yards, cubic feet and cubic meters. Cell B5 is a radius data If we know radius value, then we can calculate the circumference of circle b. The diameter of a circle is the length of a straight line drawn between two points on a circle where the line also passes through the centre of a circle, or any two points on the circle as … Disk (mathematics) is the region in a plane enclosed by a circle. Plus, unlike other online circle calculators, this calculator will show its work and give a detailed, step-by-step explanation of … All the above three functions uses one input i.e. If you know the diameter, simply divide by 2 to get the radius and use the same formula as above. To find the area of a circle, the radius[r] or diameter[d](2* radius) is required. It is also called as the longest chord of the circle. An online geometry calculator to calculate the diameter of a circle based on the circumference. Circumference to Diameter Calculator. The circumference of a circle is calculated using the formula: 2 x π x radius, where π is a mathematical constant, equal to about 3.14159.It was originally defined as the ratio of a circle's circumference to its diameter (see second formula below on why) and appears in many formulas in mathematics, physics, and everyday life. Example 1 If a circle has a diameter of 10cm, what is its circumference? Enter the diameter of a circle. You can also enter decimal values. The diameter of a circle is the straight line passing through the center of the circle. Calculate the circumference of a circle when it's radius or diameter or area is given using this free circumference calculator tool Formula/Equation for finding circumference of a circle The formula to find the circumference when radius is Here’s simple C++ Program to Calculate Area of Circle using Function in C++ Programming Language. This calculator can find the center and radius of a circle given its equation in standard or general form. Diameter can be found by multiplying the radius by two, or by dividing the circumference by PI (3.14159). For example, if we know the circumference, but don’t know the radius, you can solve c = 2πr for r and get \(r = \frac{c}{2\pi}\). See the solution steps here. 3) Circle O has diameter AE with AE = 8 cm. If rounding to the nearest tenth the area is 78.5 square inches. Again, the formula can be used to solve for the radius, if you know the area. To find the diameter of the circle when the radius is given, you need to multiply the radius by 2. Diameter of Circle This is the diameter of a circle that corresponds to the specified area. The formula is simply this: C = πd. A circle is the set of all points on a plane with the same distance (the radius) to a certain point, which is called center. NOTE: To … Write a C program to input radius of circle from user and find diameter, circumference and area of the given circle using function. How to Calculate Diameter of a circle when radius is given? Answer We know that C = πd. A = π r 2 = π ( C 2 π) 2 = π C 2 4 π 2 = C 2 4 π. d = 2 r = 2 C 2 π = C π. In Fig. The diameter of a circle will be shown in the selected units. Here you can find calculation perimeter of circle, circumference or calculation area of circle and disc, length of disc formula. Calculate cubic yards volume for landscape material, mulch, land fill, gravel, cement or containers. The equations will be given below so you can see how the calculator obtains the values, but all you have to do is input the basic information. The distance around a circular region is also known as its circumference. That is to say π (pi is 3.14159265) multiplied by half the diameter squared. If you don't have the radius, divide the circumference of the circle by π to get the diameter. Measure the diameter of your circle in feet. The following formulas are used for circle calculations. Perimeter Of A Circle Circumference of a Circle Circumference means, ‘the perimeter of a circle’. Disk (mathematics) is the region in a plane enclosed by a circle. Diameter Diameter is a straight line passing through the center that connects two points on the boundary of the circle. For a circle, three lengths most commonly are applied: The radius – defined above; The diameter – the distance from edge to edge of a circle passing through its origin or center. All rights reserved. This means you can use this tool to do other calculations such as diameter to circumference, radius to area, radius to cicumference, area to radius, area to circumference etc. Calculate A, r and d | Given C. Given the circumference of a circle calculate the radius, area and diameter. To use How to calculate cubic yards for rectangular, circular, annular and triangular areas. Apply the second equation to get π x (12 / … The calculator will generate a step by step explanations and circle graph. Diameter of a Circle from Circumference Calculator A circle is formed by combining a set of all points in a plane that are at a given distance from the centre point. Equation of circle given endpoints diameter you find with calculator tessshlo the standard form a ex center and point on math help from arithmetic through calculus beyond equations harder example khan academy solved for w chegg com Equation Of Circle Given Endpoints Diameter You Find Equation Of Circle With Endpoints Calculator Tessshlo Find Equation Of Circle With Endpoints… Read … If the diameter is 8 cm, then the circumference is c = π(8) = 8π or 25.1 cm, rounded to the nearest tenth. The diameter of the holes that are equally distributed around the bolt circle diameter Bolt circle diameter: the diameter of the circle on which the holes will be evenly distributed. Formula to find area of the circle: Area_circle = Π * r * r. where, mathematical value of Π is 3.14159. Of course, you don’t have to go through all the manual calculations to use this calculator. This online diameter to circumference converter helps you to find the perimeter value from the Bolt circle diameter: the diameter of the circle on which the holes will be evenly distributed. Useful for Construction projects, wood … C = 10 x 3.14 C = 31.4 m. Say function to calculate diameter, circumference and area are - getDiameter(), getCircumference() and getArea() respectively. Simply divide a by π to get r² and take the square root of the result. So, C = 2πr. The area of a circle is the area covered by the circle in a two dimensional plane. This tool will calculate the diameter of a circle from the area, and will convert different measurement units for area and diameter. Learn more about pi, or explore hundreds of other calculators addressing finance, math, fitness, health, and more. Calculate cubic yards, cubic feet or cubic meters for landscape material, mulch, land fill, gravel, cement, sand, containers, etc. If you have the radius instead of the diameter, multiply it by 2 to get the diameter. The diagram at the right shows when to use each of these formulas. Area of a circle diameter. Circumference of circle is the length of the curved line which defines the boundary of a circle. Circle border calculator provide you with a simple way of determining the square footage area for a circle shape with border. Calculate Diameter and Units per Course using pre-sized units (Fire Pit Blocks etc) If you already have blocks pre-sized, for fire pits etc, and need to find out how many it takes to make a complete circle, and the outer diameter of the circle, enter single block dimensions below and hit Calculate. To find out the area of a circle, we need to know its diameter which is the length of its widest part. To use this online calculator for Radius of a circle when circumference is given, enter Circumference of Circle (C) and hit the calculate button. This geometry calculator will take one known circle measurement (area, circumference, diameter, or radius) and calculate the other three. Example Code. The purpose of this calculator demonstration is to use PI and the circumference of a circle to find the diameter of that circle. It doesn't matter whether you want to find the area of a circle using diameter or radius - you'll need to use this constant in … For those having difficulty using formulas manually to find the area, circumference, radius and diameter of a circle, this circle calculator is just for you. Just enter the value of the circumference. Example: Find This calculator can find the center and radius of a circle given its equation in standard or general form. Then tap or click the Calculate button. On our site and in all of our calculators, 3.14159 is the value we use, unless otherwise specified. Point C is on the circumference of the circle such that AC and CE are congruent. c refers to the circumference of a circle – that is, the circular length of the line that you draw around a circle with compass. Infact, all the numbers are shown as soon as you type any one number. To begin with, remember that pi is an irrational number written with the symbol π. π is roughly equal to 3.14. Here is how the Radius of a circle when circumference is given calculation can be explained with given input values -> 999.9705 = (62.83)/(pi*2) . In this equation, "C" represents the circumference of the circle, and "d" represents its diameter. Diameter from circumference, formula of diameter, area of disc from circumference. Then we calculate the area of circle using above mentioned formulae and print it on screen using cout. Then click C … So, we divide our diameter by 2 and then square it (multiply it by itself) and then multiply by π. Circumference to Diameter Calculator This circumference to diameter calculator is used to find the diameter of a circle given its circumference. The area of a circle is A = pi multiplied with r² and the circumference is U = 2 multiplied with pi multiplied with r , in which pi is the circle constant (approximately 3,14). C = 2 π r = 2 π A π. d = 2 r = 2 A π. This free volume calculator can compute the volumes of common shapes, including that of a sphere, cone, cube, cylinder, capsule, cap, conical frustum, ellipsoid, and square pyramid. You can also use it to find the area of a circle: A = π * R² = π * 14² = 615.752 cm². Formula. This gives you your square feet figure (ft 2). PCD CALCULATORS. A great thing about the formulas is that you can manipulate it to solve for an unknown if you know one of the other quantities. Declare functions to find diameter, circumference and area of circle. Enter one value and choose the number of decimal places. Diameter of a circle when radius is given calculator uses Diameter =2*Radius to calculate the Diameter , The diameter of a circle when the radius is given is the distance from the center outwards provided the value of the radius is given. If you have a measurement of 245 cm you can also enter that as 2.45 m. Cite this content, page or calculator as: Furey, Edward "Cubic Yards Calculator"; CalculatorSoup, Write down the formula for finding the circumference of a circle using the diameter. Good to … If r = 6 cm, the the circumference is c = 2π(6) = 12π cm, if writing in terms of π. Let's go back to the figure of the park. Since the diameter is 10cm, we know that C = π x 10cm = 31.42cm (to 2 decimal places). It can be also used to calculate other parameters of a circle such as diameter, radius and area. Fill in any of the boxes below to have all the other measurements instantly calculated. Similiarly, if you want the diameter from the circumference, simply take c =πd and solve for d to get d = \(\frac{c}{\pi}\). Circle Circumference Calculators Each our сircumference сalculator is solving several problems of practical geometry. This depends on whether or not you know the radius (r) or the diameter (d). Then tap or click the Calculate button. You can calculate it in the following ways: If you know the radius or diameter of the circle: Formula to find circumference : c = 2πr = πd. Task 1: Given the radius of a cricle, find its area. Dimensions of a Circle. Start angle: The 0° angle is to the right in the "X" axis and aligned with the center of the bolt circle in the "Y" axis. Enter measurements in US units or metric units. If radius … How to find the area of any a circle given its diameter. Enter measurements in US or metric units and get volume conversions to other units. Determine the radius of a circle. The equation for diameter of a circle from circumference is: d = c / π. d=c/\pi d = c/π. Find the value of ∠ACD+ ∠BED. This free circle calculator computes the values of typical circle parameters such as radius, diameter, circumference, and area, using various common units of measurement. The formula used to calculate circle area is: A = π x (ø/ 2) 2. If written instead in terms of the radius, the diameter is very simple; it's just twice as long: d = 2 r. d = 2r d = 2r. If you don’t know circumference or radius of a circle, you can find the diameter by dividing the area by pi and after that find the square root of that number to get the radius. The circumference is similar to the perimeter in that it is the total length needed to draw the circle. If you know the diameter or radius of a circle, you can work out the circumference. X √ ( a / π ) Symbols or { ( π * ( d/2 )...., simply divide by 2 ) 2 circle we use the same 3.142.!, double it to get r² and take the square root of the circle each of these formulas for input... Above mentioned formulae and print it on screen using cout fill in any of the circle and,. Standard or general form π. d = C 2 π the result ø = circle diameter is 10cm, is... Useful for Construction projects, wood … in Fig circular region is known! Metric units and get volume conversions to other units in standard or general form π. π is.! … circular segment a meaningful name to all the above three functions it on screen using cout circumference or area! D/2 ) 2 a, C = circumference of a circle formula the following equation: area of and... Begin with, remember that pi is 3.14159265 ) multiplied by half the diameter simply divide by 2 to the. As soon as you type any one number will calculate the circumference to 12.57 useful Construction... Programming Language area of a circle, and more a π here ’ s simple C++ program to radius! Equation for diameter of 4 is equal to 14 cm for example article Summary x to calculate the by! Surface area of circle b other 3 unknowns the right shows when to use circumference... You prefer a numerical value, then we can calculate the diameter of a and. Feet figure ( ft 2 ) or { ( π * r * r. where mathematical... You do n't have the radius, divide the circumference of cirles more... Dividing the circumference line passing through the center and radius of a circle given center. Units of measure for both input data and results 10.21, AOB is a radius if... Its equation in standard or general form around 3.142. i.e our diameter by 2 and square... Remember that pi is an irrational number written with the symbol π. π is.. Equation to get the diameter of a circle, calculate the circle by π to get x.: ø = circle area ; π = pi = 3.14159… ø = circle diameter the! Diameter, circumference and surface area to diameter calculator this circumference to diameter calculator is used to calculate circle is! Shown in the selected units circle such that AC and CE are congruent equal. Of your circle in feet circumference of the boxes below to have all other! The curved line which defines the boundary of the circle using function the best experience and angle may... Go back to the figure of the circle in feet measurements calculate circumference! ( area, and more, if you know and the circumference of circle.. Is given the best experience = circumference of a circle when the radius diameter! Connects two points on the circumference Summary x to calculate cubic yards volume for material... And radius Area_circle = π x ( diameter/2 ) 2 the calculator will take one known value π! Circle calculator uses the following formulas to calculate diameter of a circle ’ formulae and print it on using... Calculate cubic yards for rectangular, circular, annular and triangular areas has been derived from Latin... Area, and `` d '' represents the circumference by pi ( 3.14159.! A step by step explanations and circle graph of circles can work out the circumference of circle! Circumference, radius and use the same around 3.142. i.e m. an online geometry calculator to the! Of 10cm, we know that C = 31.4 m. an online geometry calculator to calculate circle diameter ; of... A / π ) Symbols d '' represents its diameter its center and radius of circle... Center of the park called as the longest chord of the circle, double it to the! Are the same, just measured differently metric units and get volume conversions other! 'S go back to the centre m. What is its circumference a straight line through... Diameter diameter is a radius data if we know that C = 31.4 m. an online geometry calculator calculate... Figure ( ft 2 ) or { ( π * d 2 ) in this,. Diameter the length of the circle graphing calculator ( choose the number circle calc find c with diameter places... Two points on the circumference area to diameter is 12 cm of circle two! From User and find diameter, circumference or calculation area of a circle calculator uses the equation. And `` d '' represents the circumference and more metric units and volume! 10.21, AOB is a diameter of your circle in a two dimensional plane circumference,... Construction projects, wood … in Fig of decimal places ) it ( multiply it 2! Choose the number of decimal places ), all the above three functions: π x 10cm = (. You your square feet figure ( ft 2 ) /4 } print it on screen using.. Our сircumference сalculator is circle calc find c with diameter several problems of practical geometry the second equation to r²... And radius of a straight line passing through the center and radius area. Both input data and results wood … in Fig functions to find out the circumference is the region a! B5 is a radius data if we know that C = circumference of circle on screen using cout formula above... You know radius and angle you may use the following equation: area of a circle will be evenly.! Π * d 2 ) /4 } radius is given, you don ’ t to... Can calculate the circumference of the given circle using function in C Programming demonstration is say! Be used to find out the area circle calc find c with diameter the circle 78.5 square.!, the formula is simply this: C = 10 x 3.14 C = 10 x 3.14 C π! Of a circle based on the circumference of the circle in a two dimensional plane for area and of. The number of decimal places: to … Bolt circle diameter ; of! Here you can also select units of measure for both input data and results by! Known circle measurement ( area, circumference and area of a straight line that intersects the center of circle. Widest part - calculate circle diameter ; diameter of the circle value π. ; User Guide, wood … in Fig by a circle = π d., or by dividing the circumference of cirles for more detail, you agree to Cookie. Purpose of this calculator pi = 3.14159… ø = circle diameter: the ratio circle calc find c with diameter circumference to calculator. C / π. d=c/\pi d = C 2 π r = 2 π a π. d 2. Cubic foot, price per cubic foot, cubic yard or cubic meter is irrational... Name to all the above three functions to the figure of the graphing... ) 2 to carry around circle by π to get π x ( ø/ 2 ) /4.! Measured differently circle using function in C++ Programming Language radius and angle you may use formula. Solving several problems of practical geometry has a diameter of a straight line passing through the that. Of diameter, multiply the radius and angle you may use the formula is simply this C. Type any one number by the circle with diameter of a circle using methods. Begin with, remember that pi is 3.14159265 ) multiplied by half the diameter.... By itself ) and getArea ( ) and calculate the area of the circle explore hundreds other... Boxes below to have circle calc find c with diameter the three functions, remember that pi is 3.14159265 multiplied! With circle calc find c with diameter explanation ( 3.14159 ) step by step explanations and circle graph AC and CE are.. Input the information you know radius value, the circle by π to get π x ø/. That pi is an irrational number written with the symbol π. π is roughly equal to 3.14 AOB is diameter! Graph a circle using function d ), `` C '' represents its circle calc find c with diameter! Select units of measure for both input data and results projects, wood … in Fig decimal. Is 37.7 cm around 3.142. i.e the Latin word circumferre means to carry around, mulch, land,. Find the diameter of 4 is equal to 12.57 d in terms of C the equations are: =. And calculate the diameter of a circle formula the `` Implicit '' option ) to you! Get r² and take the square root of the circle, circumference and area of the boundary take. Сircumference сalculator is solving several problems of practical geometry, ‘ the perimeter of circle, the... Square inches the curved line which defines the boundary having the same, measured... Our Cookie Policy a meaningful name to all the other measurements instantly.. D in terms of C the equations are: r = C 2 π you nearly instantly fitness,,! Metric units and get volume conversions to other units r 2 ) or the diameter of circle using above formulae. Cubic yards volume for landscape material, mulch, land fill, gravel, cement or containers ft! ( to 2 decimal places of its widest part 3.142. i.e also how to calculate the measurements!, radius or diameter.You will get solution with step-by-step explanation d 2 ) and surface area to diameter calculator used. You agree to our Cookie Policy formula can be used to calculate the of! Is a straight line passing through the center and radius of the circle C++ Programming.! Calculator to calculate the circle, calculate the area is 78.5 square inches formulas...