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6 May, 01:57

Find the diameter of a circle whose area is 254.34 square inches.

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  1. 6 May, 05:26
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    Area=pi times radius^2

    radius=1/2diameter

    2radius=diameter

    solver

    254.34=pi times r^2

    aprox pi to 3.14

    256.34=3.14 times r^2

    divide both sides by 3.14

    81=r^2

    square root both sides

    9=r

    subsitue

    2r=d

    2 (9) = d

    18=d

    the diameter is 18 inches
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