# What is the formula for circumference

The formula used in finding the circumference of a cylinder is the same for a circle. C = 2πr.

**Math Antics - Circles, Circumference And Area**

Circumference of a circle = 2πr, where, 'r' is the radius of the circle and π(pi) is a special mathematical constant with a value approximated to or π.

In geometry, the circumference (from Latin circumferens, meaning "carrying around") is the perimeter of a circle or ellipse. That is, the circumference would.

Circles are all similar, and "the circumference divided by the diameter" produces the same value regardless of their radius. This value is the ratio of the. What is the circumference of a circle? The circumference of a circle is the distance around the outside of the circle. It is like the perimeter of other.

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