Question

    The volume of cone is 1267.2 cm3. If its height is 2.1 cm then find the radius of the cone.

    A 30 cm Correct Answer Incorrect Answer
    B 24 cm Correct Answer Incorrect Answer
    C 27 cm Correct Answer Incorrect Answer
    D 33 cm Correct Answer Incorrect Answer

    Solution

    Let the radius of the cone be ‘r’ cm Therefore, (1/3) × (22/7) × r2 × 2.1 = 1267.2 Or, r2 = 1267.2 × (7/11) = 576 Or, r = 24 (since, radius cannot be negative) Therefore, radius of the cone = 24 cm

    Practice Next