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The formula for finding the Area is A = Pi x R-squared, where Pi is 3.1416 and R-squared is the radius multiplied by itself: A = 3.1416 x (5 x 5)= 3.1416 x 25 = 78.54 sq ft. The formula for finding the circumference is C = Pi x D where Pi is 3.1416 and D is the diameter (diameter is Radius x 2): C = 3.1416 x 10 = 31.416 ft.

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17y ago

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