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    Question

    Find the volume of a hemisphere whose radius is 25%

    smaller than the side length of a square with a perimeter of 160 cm. 
    A 56,520 cubic cm Correct Answer Incorrect Answer
    B 54,640 cubic cm Correct Answer Incorrect Answer
    C 58,320 cubic cm Correct Answer Incorrect Answer
    D 55,720 cubic cm Correct Answer Incorrect Answer

    Solution

    Side of square = (160/4) = 40 cm Radius of hemisphere = 0.75 X 40 = 30 cm Volume of hemisphere = (2/3) X π X radius3 = (2/3) X 3.14 X 303 = 56,520 cm3

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