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

    Question

    If the edge of the cube is increased by 50%, then find

    the percentage increase in the volume of the cube.
    A 200% Correct Answer Incorrect Answer
    B 250% Correct Answer Incorrect Answer
    C 237.5% Correct Answer Incorrect Answer
    D 225% Correct Answer Incorrect Answer

    Solution

    Let the edge of the cube be x unit
    Volume of cube = x³ cubic unit
    New edge = 1.5x unit
    New volume = (1.5x)³ = 3.375x³ cubic unit
    Increase in volume = 3.375x³ – x³ = 2.375x³ cubic unit
    Percentage increase = (2.375x³ / x³) × 100 = 237.5%

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