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Ex 13.4, 6 - Find radius of a sphere whose surface area - Area Of Sphere

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Ex 13.4 , 6 Assume = 22/7, unless stated otherwise. Find the radius of a sphere whose surface area is 154 cm2. Let r be the radius of the sphere. Surface area = 4 2 154 cm2 = 4 2 154 cm2 = 4 22/7 2 154 7/(22 4) cm2 = 2 2 = 12.25 r = 12.25 r = 3.5 Thus, the radius of the sphere is 3.5 cm

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.