by timesing the circumference by pie
Divide the circumference by Pi.
If you have only the diameter to get the circumference you have to multiply the circumference by pi: 3.14
Radius = circumference/pi
Circumference = pi*d. So d = Circumference/pi
Circumference = 2*pi*radius So Radius = Circumference/(2*pi)
Divide the circumference by (2*pi)
circumference is only in a circle. Circumference only applies to circles, ellipses, or other round objects. If you want to find the "perimeter," add up all three sides.
Radius = Circumference/(2*pi)
The circumference of a cylinder cannot be found. Only the circumference of the two round bottoms can be found. The circumference equals 2pi times the radius.
Divide the circumference by the value Pi - this will give you the diameter.