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    Question

    ┬а┬а If the surface area of two spheres is in the ratio

    81 : 25, then what is the ratio of their radius.
    A 5 : 8 Correct Answer Incorrect Answer
    B 7 : 9 Correct Answer Incorrect Answer
    C 5 : 7 Correct Answer Incorrect Answer
    D 9 : 5 Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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