1. Chapter 11 Class 9 Surface Areas and Volumes
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  3. Ex 11.3
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Ex 11.3, 4 - Chapter 11 Class 9 Surface Areas and Volumes

Last updated at Dec. 13, 2024 by Teachoo

 

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.
  1. Chapter 11 Class 9 Surface Areas and Volumes
  2. Serial order wise

    3. Ex 11.3

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Ex 11.4 →
Chapter 11 Class 9 Surface Areas and Volumes
Serial order wise

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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