Question
Curved surface area of cylinder is 215.6 cm2.
If ratio of radius to height of the cylinder is 10:4 respectively, then find the base area of the cylinder.ÂSolution
Let radius and height of the cylinder is ‘10x’ cm and ‘4x’ cm respectively. So, 2 × (22/7) × 10x × 4x = 215.6 Or, x2 = 0.49  Or, x = 0.7 Radius of cylinder = 10 × 0.7 = 7 cm Desired area = 22/7 × 7 × 7 = 154 cm² Â
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