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Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


Transcript

Ex 11.3, 4 If the volume of a right circular cone of height 9 cm is 48 cm3, find the diameter of its base. Height of cone = h = 9 cm Let radius of cone = r cm Given Volume of cone = 48 cm3 1/3 r2h = 48 1/3 r2 (9) = 48 " " 23="48 " r2 = (48 )/3 r2 = 16 r = 16 r = ((4)2) r = 4 cm Diameter = 2 Radius Thus, the diameter of the base of cone is 8 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 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.