Question

    If the base radius of 2 cylinders are in the ratio 3 : 4 and their heights are in the ratio 4 : 9, then the ratio of their volumes is:

    A 2:1 Correct Answer Incorrect Answer
    B 1:4 Correct Answer Incorrect Answer
    C 1:2 Correct Answer Incorrect Answer
    D 4:1 Correct Answer Incorrect Answer

    Solution

    r1 : r2 = 3 : 4 h1 : h2 = 4 : 9 Volume of cylinder = πr 2 h Ratio of volume = πr1 2 h 1 : πr2 2 h 2 32× 4 : 42× 9 = 1 : 4

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