Circumference divided by pi to find the diameter then divide that by 2 to give you answer!!
Formula: R=c/pi/2
eg.
circumference =60 so,
60 divided by pi = 19.098, then
divide 19.098 by 2 to give you
9.549!!
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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
Circumference=2*pi*radius