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OpenStudy (anonymous):
Find the exact area of a circle having the given circumference.
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geerky42 (geerky42):
Formula for the circumference of circle: \(C = 2\pi r\) Formula for the area of circle: \(A = \pi r^2\)
geerky42 (geerky42):
In circumference formula, you can isolate r, so you can substitute r from area formula with it
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