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    Question

    The surface areas of two spheres are in the ratio 4 : 9.

    Find the ratio of their volumes.
    A 5:13 Correct Answer Incorrect Answer
    B 8:27 Correct Answer Incorrect Answer
    C 7:19 Correct Answer Incorrect Answer
    D 11:32 Correct Answer Incorrect Answer

    Solution

    Surface Area ratio = r12 : r22 = 4 : 9. Radius ratio = r1 : r2 = 2 : 3. Volume ratio = r13 : r23 = 23 : 33 = 8 : 27.

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