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23 April, 10:19

The area of a circle is 1256 square inches. What is the radius?

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  1. 23 April, 10:42
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    The radius is 20.

    Step-by-step explanation:

    We know the area of a circle is found by

    A = pi r^2

    We know A = 1256 and pi is approximated by 3.14

    1256 = 3.14 r^2

    Divide each side by 3.14

    1256/3.14 = 3.14/3.14 r^2

    400 = r^2

    Take the square root of each side

    sqrt (400) = sqrt (r^2)

    20 = r
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