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12 June, 19:33

What the radius of a circle with an area of 64 square feet

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  1. 12 June, 19:34
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    A=pir²

    64=pir²

    divide both sides by pi

    64/pi=r²

    sqrt both sides

    8/√pi=r

    (8√pi) / pi=r

    aprox

    4.51352=r

    about 4.5ft is the radius
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