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If a circle has a circumference of c , what is the area of the circle in terms of c ?
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If a circle has a circumference of c , what is the area of the circle in terms of c ?

User Benoit Tremblay
by
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1 Answer

4 votes
C = 2(pi)r
r = C/2 pi
A = pi r^2
= pi (c/2 pi)^2
= pi c^2/4 pi^2
= c^2/4 pi
User Dalin Huang
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