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    anandjose's Avatar
    anandjose Posts: 1, Reputation: 1
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    #1

    Oct 29, 2013, 11:00 PM
    Cubic feet calculation
    A solid substance of cylindrical shape, 43 inches of circumference and 1 feet length. Is how much cubic feet?
    Celine91's Avatar
    Celine91 Posts: 51, Reputation: 9
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    #2

    Oct 30, 2013, 09:32 AM
    43 inches of circumference and 1 feet length.

    circumference: 2*pi*r = 43 inches ---> r = 6.847 inches
    area = pi * r^2 = 147.275 (inches)^2
    volume = area * height = 147.275 * 12 = 1767.29 (inches)^3
    [1 feet = 12 inches]

    answer has to be in cubic feet, (1 feet)^3 = 1728 (inches)^3
    ==> cylinder in cubic feet = 1767.29/1728 = 1.02273

    Answer = 1.02273 cubic feet.

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