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    Question

    The volume of cone is 1689.6 cm3. If its

    height is 2.8 cm then find the radius of the cone.
    A 35 cm Correct Answer Incorrect Answer
    B 36 cm Correct Answer Incorrect Answer
    C 27 cm Correct Answer Incorrect Answer
    D 24 cm Correct Answer Incorrect Answer

    Solution

    Let the radius of the cone be тАШrтАЩ cm Therefore, (1/3) ├Ч (22/7) ├Ч r2 ├Ч 2.8 = 1689.6 Or, r2 = 1689.6 ├Ч (7/11) = 576 Or, r = 24 (since, radius cannot be negative) Therefore, radius of the cone = 24 cm

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