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The volume and the curved surface area of cylinder are 1650 cm3 and 660 cm2 respectively. Find the radius and height of the cylinder. |
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Answer» We have, Volume of cylinder = 1650 cm3 Curved surface area = 660 cm2 Volume of cylinder/curved surface area = 1650/660 πr2h/ 2πrh = 1650/660 r/ 2 = 5/2 r = 5cm Surface area = 660 cm2 2πrh = 660 2 × 22/7 × 5 × h = 660 h = 660×7 / 2×22×5 = 4620/220 = 21cm ∴ Radius = 5cm and height = 21cm |
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