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    Question

    The outer radius of a hollow metallic spherical ball is

    12cm while the thickness of the metal used to make it is 8 cm. Find the volume of the metal used in making this ball.
    A 2218.6π Correct Answer Incorrect Answer
    B 2514.6π Correct Answer Incorrect Answer
    C 1218.6π Correct Answer Incorrect Answer
    D 2318.6π Correct Answer Incorrect Answer

    Solution

    Inner radius of the ball= (12-8) =4cm Required volume= 4 π/3 (12 ³ -4³) =4 π/3(1728-64) = = 4 π/3 ×1664=2218.6π

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