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What is the diameter of a barrel that is 3.5 ft tall and holds 11 cubic feet of water

  • math - ,

    vol = πr^2 h
    πr^2 (3.5) = 11
    r^2 = 11/(3.5π)
    r = √(11/(3.5π)) = appr 1

    so the diameter is appr 2 ft

    check:
    Vol = π(1^2)(3.5) = 10.9955.. , OK!

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