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    Question

    If radius of a sphere is decreased by 48%, then by what

    percent does its surface area decrease?
    A 82.91% Correct Answer Incorrect Answer
    B 72.96% Correct Answer Incorrect Answer
    C 78.98% Correct Answer Incorrect Answer
    D 86.26% Correct Answer Incorrect Answer

    Solution

    Required change = -48 - 48 + (48×48)/100 = -96 + 23.04 = -72.96% (-ve shows decrease)

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