Ex 13.2, 1 The curved surface area of a right circular cylinder of height 14 cm is 88 cm2. Find the diameter of the base of the cylinder. Assume = 22/7 Height (h) of cylinder = 14 cm & radius of cylinder be r Given Curved surface area of cylinder = 88 cm2 2 rh = 88 cm2 2 22/7 r 14 cm = 88 r = (88 7)/(2 22 14) r = 1 cm Diameter = 2 Radius = 2 1 = 2 cm Therefore, the diameter of the base of the cylinder is 2 cm.

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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