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Q: When given a circumference how do you find the area?

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Area = (circumference squared)/(4 pi)

Square root (Area/pi) to get the radius Then 2xRadiusxPi= Circumference

You can not find the circumference when only area is given. you need other details relating to shape. minimum parameter should be provided to find the required parameter.

Radius = square root of (area/pi) Circumference = 2*pi*radius

Divide the circumference by 2*pi which will give the value of the radius. Then use p*radius2 to find the area of the circle.

S = C2/pi where S is the surface area, C is the circumference.

Entire surface area of a cylinder = (2*pi*radius^2)+(circumference*height) If you are given the circumference then radius = circumference/2*pi

If the area of a circle is given as 67cm squared, the diameter is 9.236 cm and the circumference is 29.02 cm

Times length times width

Area = Circumference squared divided by 4pi.

If the circumference or diameter is given then you can find the radius or simply measure the distance from the centre of the circle to the circumference.

To find area given perimeter, rename perimeter to circumference and solve with these formulas: Circumference = 2πr (or 2 * π * r) Area = πr^2 (or π * r * r) With these the area can be found from circumference(or perimeter) as follows: A = π(C / 2π)^2 Now, to find the perimeter given the area; We use A = πr^2 and rearrange then solve: r = √(A / π) So, the circumference would be 2πr = 2π√(A / π)

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