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

    Question

    Calculate the difference between the area of a wall

    having dimension 22 cm X 23 cm and the area of a spherical bowl having diameter 14cm.
    A 110 cm² Correct Answer Incorrect Answer
    B 120 cm² Correct Answer Incorrect Answer
    C 132 cm² Correct Answer Incorrect Answer
    D 126 cm² Correct Answer Incorrect Answer

    Solution

    Area of the wall = 22 X 23 = 506 cm2Area of the spherical bowl = 4 X π X r2Here, radius of the spherical bowl = Diameter/2Radius of the spherical bowl = (14/2) = 7 cmArea of the spherical bowl = 4 X (22/7) X 7 X 7 = 616 cm2Required difference = 616 - 506 = 110 cm2

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