501 Geometry Questions

The Circumference of a Circle

Remember that circumference is just the name for perimeter that is used
with circles. You can use the diameter or the radius to find the circumference
of a circle by using either of these formulas:

Circumference =πd or 2 πr

A

B

7 in.

C = 2πr

C = 2  π  7 inches

C = 14π inches

501 Geometry Questions