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    Question

    A right triangle ABC with sides 9 cm ,12cm and 15cm is

    revolved about the side 12 cm. What is the volume of the solid so obtained? (in cm 3 )
    A 343╧А Correct Answer Incorrect Answer
    B 324╧А Correct Answer Incorrect Answer
    C 175╧А Correct Answer Incorrect Answer
    D 225╧А Correct Answer Incorrect Answer

    Solution

    R = 9cm h= 12cm volume of the cone = 1/3 ╧Аr2 h = 1/3 ╧А ├Ч81├Ч12 = 324╧А cm3

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