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19 October, 09:08

A cylindrical pipe is 9 ft long and has a volume of 100ft^3. Find its approximate diameter to the nearest hundredth of a foot.

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  1. 19 October, 09:41
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    Answer: The diameter of the pipe is 3.8 feet.

    Step-by-step explanation:

    Hi to answer this question we have to apply the next formula:

    Volume of a cylynder: π x r^2 x h

    Where r is radius and h is height (length of the pipe in our case)

    Replacing with the values given and solving for r:

    100 = π x r^2 x9

    100 / π x 9 = r^2

    √ (100 / π x 9) = r

    r = 1.88

    Since the diameter (D) is equal to:

    D = 2r

    D = 2 x 1.88 = 3.8 feet
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