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    Question

    If the edge of the cube is increased by 100%, then find the

    percentage increase in the volume of the cube.
    A 600% Correct Answer Incorrect Answer
    B 700% Correct Answer Incorrect Answer
    C 800% Correct Answer Incorrect Answer
    D 900% Correct Answer Incorrect Answer

    Solution

    Let the edge of the cube be x unit
    Volume of cube = x³ cubic unit
    New edge = 2x unit
    New volume = (2x)³ = 8x³ cubic unit
    Increase in volume = 8x³ – x³ = 7x³ cubic unit
    Percentage increase = (7x³ / x³) × 100 = 700%

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