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16 January, 11:40

If the volume of a cylinder with the height of 3 feet is 75 cubic feet, find the surface area of a cylinder in square feet.

F25 G50 H80 J30

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  1. 16 January, 12:55
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    Surface area of cylinder = 2πrh+2πr²

    Volume of cylinder = 2πr²*h

    So:

    75 = 2πr²*3

    12.5 = πr²

    r = 1.99 (471140201)

    A = 2 π*1.99*3+2π*1.99²

    = 62.39 (265842) ft²
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