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    Question

    If the volume of a cylinder is 486╧А and the ratio of

    radius to its height is 3:2 then find the curved surface area of cylinder?
    A 24╧А unit┬▓ Correct Answer Incorrect Answer
    B 40╧А unit┬▓ Correct Answer Incorrect Answer
    C 96╧А unit┬▓ Correct Answer Incorrect Answer
    D 108╧А unit┬▓ Correct Answer Incorrect Answer

    Solution

    Volume of cylinder = 486╧А тЗТ ╧Аr2h = 486╧А тЗТ r2h = 486 units тЗТ 9x2*2x = 486 units тЗТ x3 = 27 тЗТ x = 3 Radius = 9 units & height = 6 units. Curved surface area = 2╧Аrh Curved surface area = 108╧А unit ┬▓ ┬а

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