New Enroll in RBI Grade B New Batch - Starts on May 21

    Question

    If the edge of the cube is increased by 10%, then find

    the percentage increase in the volume of the cube.
    A 31% Correct Answer Incorrect Answer
    B 33.1% Correct Answer Incorrect Answer
    C 30.3% Correct Answer Incorrect Answer
    D 36% Correct Answer Incorrect Answer

    Solution

    Let the edge of the cube be x unit
    Volume of cube = x³ cubic unit
    New edge = 1.1x unit
    New volume = (1.1x)³ = 1.331x³ cubic unit
    Increase in volume = 1.331x³ – x³ = 0.331x³ cubic unit
    Percentage increase = (0.331x³ / x³) × 100 = 33.1%

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