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A cylinder, whose height is 3 m, is open from top. The circumference of its base is 22 m. Find its total surface area. |
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Answer» Let the radius of base be r m. Then, 2πr = 22 ⇒ 2 x 22/7 x r = 22 r = 7/2 h = 3 m Total Surface Area = 2 πrh + πr2 = 2 x 22/7 x 7/2 x 3 + 2/7 x 7/2 x 7/2 = 66 + 38.5 = 104.5 m2 |
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