Question
The volume of cone is 1689.6 cm3. If its
height is 2.8 cm then find the radius of the cone.Solution
Let the radius of the cone be ‘r’ cm Therefore, (1/3) × (22/7) × r2 × 2.8 = 1689.6 Or, r2 = 1689.6 × (7/11) = 576 Or, r = 24 (since, radius cannot be negative) Therefore, radius of the cone = 24 cm
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