find the exact area of the circle with a circumference of 8pi yards.
C = π d ==>> 8 π = π d ==>> d = 8
r = d / 2 ==>> r = 8 / 2 ==>> r = 4
A = π r2 ==>> A = (3.1416) (42)
= 3.1416 x 16
= 50.27 yd3
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