Example 13 - Chapter 13 Class 9 Surface Areas and Volumes (Term 2)
Last updated at July 11, 2018 by Teachoo
Examples
Example 1
Example 2 Important
Example 3
Example 4
Example 5
Example 6 Important
Example 7
Example 8 Important
Example 9
Example 10
Example 11 Important
Example 12
Example 13 You are here
Example 14 Important
Example 15
Example 16 Important
Example 17
Example 18 Important
Example 19
Surface Area and Volume Formulas Important
Chapter 13 Class 9 Surface Areas and Volumes (Term 2)
Serial order wise
Transcript
Example 13 The pillars of a temple are cylindrically shaped . If each pillar has a circular base of radius 20 cm and height 10 m, how much concrete mixture would be required to build 14 such pillars? Height of cylinder = h = 10 m Radius = r = 20 cm = 20 × 1/100 m = 2/10 m Volume of concrete in 1 cylindrical pillar = πr2 h = 22/7 × 2/10 × 2/10 × 10 m3 = 88/70 m3 ∴ Volume of concrete in 1 cylindrical pillar = 88/70 m3 So, Volume of concrete in 14 cylindrical pillars = 14 × 88/70 m3 = 17.6 m3
