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    Question

    The solid spheres of radius 3 cm, 4 cm and 5 cm are

    melted and recasted into a solid sphere. What will be the percentage decrease in the surface area?
    A 14 percent Correct Answer Incorrect Answer
    B 12 percent Correct Answer Incorrect Answer
    C 16 percent Correct Answer Incorrect Answer
    D 28 percent Correct Answer Incorrect Answer

    Solution

    The correct answer is D

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