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Math and Arithmetic
Algebra
Geometry

Derive the formula for radius if the formula is c equals pi times r squared?

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July 12, 2009 5:23PM

Where pi (~ 3.1416) is represented by π, The formula C= πr2 yields the formula r2 = (C/π) therefore r = square root (C/π). ...which is the same as : r = (C/π)1/2.