Ex 11.2, 2 (i) - Chapter 11 Class 9 Surface Areas and Volumes

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Ex 11.2, 2 Assume = 22/7, unless stated otherwise. Find the surface area of a sphere of diameter: 14 cm Radius of sphere = r = /2= (14/2) = 7 cm Surface area of sphere = 4 r2 = (4 22/7 7 7)cm2 = (4 22 1 7)cm2 = 616 cm2

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo