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    Question

    The inner radius of a cylindrical shell is 9.5 cm. If the

    length of the shell and the thickness of the shell are 10 cm and 4 cm, respectively, find the approximate volume of the shell. (Use ╧А = 22/7)
    A 1314 cm┬│ Correct Answer Incorrect Answer
    B 1850 cm┬│ Correct Answer Incorrect Answer
    C 1488 cm┬│ Correct Answer Incorrect Answer
    D 1785 cm┬│ Correct Answer Incorrect Answer

    Solution

    ATQ,

    Outer radius of the shell = 9.5 + 4 = 13.5 cm

    Volume of the shell = ╧А ├Ч height ├Ч [(outer radius)┬▓ - (inner radius)┬▓]

    = (22/7) ├Ч 10 ├Ч (13.5┬▓ - 9.5┬▓)

    = (22/7) ├Ч 10 ├Ч (182.25 - 90.25)

    = (22/7) ├Ч 10 ├Ч 92

    = 1,314.29 cm┬│ or 1314 cm┬│

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