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    Question

    The volume of cone is 1617 cm3. If its height

    is 3.5 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 21 cm Correct Answer Incorrect Answer

    Solution

    Let the radius of the cone be ‘r’ cm Therefore, (1/3) × (22/7) × r2 × 3.5 = 1617 Or, r2 = 1617 × (7/11) = 441 Or, r = 21 (since, radius cannot be negative) Therefore, radius of the cone = 21 cm

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