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20 September, 01:56

What is the radius in feet of a circle that contains 78.5 square feet?

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  1. 20 September, 01:58
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    A=pr^2

    r = (a/p) ^ (1/2)

    r = (78.5) ^ (1/2) ft

    r=5 ft (to the nearest one-hundredth)
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