Q: How do you find a radius if you have the circumference?

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Divide the circumference by 2PI to find the radius. ( C = 2PI*Radius)

find the radius of a circle with circumference of 42.1

To find the circumference of a circle, use the equation: Circumference = 2*π*radius so when the radius is r, the circumference is 2πr

Diameter = circumference/pi Radius = circumference/2*pi

Diameter = radius * 2 Circumference = pi * diameter.

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Divide the circumference by 2PI to find the radius. ( C = 2PI*Radius)

Circumference = 2*pi*radius So Radius = Circumference/(2*pi)

find the radius of a circle with circumference of 42.1

Circumference = 2 x Pi x Radius Radius = Circumference / (2 x Pi).

To find the circumference of a circle, use the equation: Circumference = 2*π*radius so when the radius is r, the circumference is 2πr

Circumference of a circle = 2*pi*radius

Circumference = 2 * radius * pi (where pi is approx = 3.14159)So Radius = Circumference / (2 * pi)

Diameter = circumference/pi Radius = circumference/2*pi

circumference = pi * 2radius (diameter) so to find radius you use circumference/(2 x pi) this will find radius ----

Diameter = radius * 2 Circumference = pi * diameter.

Circumference=2*pi*radius

circumference equal 2*pi*r(radius) C=2PiR