Circumference of a Circle
Submitted by Isoscel on Sat, 01/05/2008 - 06:27.
The circumference of a circle is pi times the diameter (the diameter is double the radius).
Let r be the radius of the circle and d be the diameter of the circle.
Then we have:
We can evaluate circle length using integral calculus.F0r
Circle length=
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In this figure we have BC = d and AB = r.