a rectangular sheet of paper 66 m × 20 cm is rolled along its length to the form a cylinder find the radius and volume of the cylinder
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Since rectangular sheet is rolled along its length so it becomes circumstance of the circle. Let r be the radius then 2πr=66.. r=21/2cm and height of the cylinder is 20cm. Volume of a cylinder=πr^2h=22/7×21/2×21/2×20=22×3×21×5=6930 cm cube.
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