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    Question

    The volume of cone is 1900.8 cm3. If its

    height is 1.4 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 × 1.4 = 1900.8 Or, r2 = 1900.8 × (7/11) = 1296 Or, r = 36 (since, radius cannot be negative) Therefore, radius of the cone = 36 cm

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