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

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

Circumference = 2*pi*radius

Circumference = 2*pi*radius

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

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Circumference = 2*pi*radius So the radius = circumference/2*pi

Circumference of a circle = 2*pi*radius

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

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

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