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    Question

    Find the radius of the sphere whose volume is 562.5╧А

    cm3
    A 4.5 Correct Answer Incorrect Answer
    B 7.5 Correct Answer Incorrect Answer
    C 3.5 Correct Answer Incorrect Answer
    D None of these Correct Answer Incorrect Answer

    Solution

    Let the radius of the sphere be 'r' cm. Volume of sphere = (4/3) ├Ч ╧А ├Ч r3 So, 562.5╧А = (4/3) ├Ч ╧А ├Ч r3 Or, (3375/8) = r3 So, r = (15/2) = 7.5

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