find ratio of the curved surface area of a cylinder to its total surface area, given that its height and radius are 13.5cm and 7.5 cm Respectively
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Step-by-step explanation:
Given radius = 7.5cm
height = 13.5cm
Curved Surface Area of cylinder = 2πrh
= 2*22/7 *7.5 *13.5
= 22/7*202.5
= 636.4 cm^2
Total Surface Area of cylinder = 2πr(h+r)
2 *22/7 * 7.5(13.5+7.5)
2 *22/7 * 7.5(21)
22/7 * 315
= 990 cm ^2
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