The volume of cone is 1617 cm^{3}. If its height is 3.5 cm then find the radius of the cone.

Let the radius of the cone be ‘r’ cm Therefore, (1/3) × (22/7) × r^{2} × 3.5 = 1617 Or, r^{2} = 1617 × (7/11) = 441 Or, r = 21 (since, radius cannot be negative) Therefore, radius of the cone = 21 cm

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