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Ex 11.2, 1 (i) - Chapter 11 Class 9 Surface Areas and Volumes

Last updated at May 29, 2023 by

Ex 13.4, 1 - Find surface area of a sphere of radius - Ex 13.4

 

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Ex 11.2, 1 Assume = 22/7, unless stated otherwise. Find the surface area of a sphere of radius: 10.5 cm Radius of sphere = r = 10.5 cm Surface area of sphere = 4 r2 = (4 22/7 10.5 10.5)cm2 = 1386 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 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.