Ex 13.7 , 1 Assume = 22/7 , unless stated otherwise. Find the volume of the right circular cone with (ii) radius 3.5 cm, height 12 cm Here, r = 3.5 cm and h = 12 cm Volume of the cone = 1/3 r2h = 1/3 22/7 3.5 3.5 12 cm3 = 1 22/7 35/10 35/10 4 cm3 = 1 22 5/10 35/10 4 cm3 = 154 cm3

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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.

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