Skip to content
Philoid
Browse Saved
Back to chapter
Mathematics
13. Suface Areas and Volumes
Home · Class 9 · Mathematics · NCERT - Mathematics · 13. Suface Areas and Volumes
Prev
Next
Q1 of 75 Page 233

Find the volume of the right circular cone with

(i) Radius 6 cm, height 7 cm


(ii) Radius 3.5 cm, height 12 cm

(i) Radius (r) = 6 cm

Height (h) = 7 cm


Volume = r2h


= * * 6 * 6 * 7


= 12 * 22


= 264 cm3


(ii) Radius (r) = 3.5 cm


Height (h) = 12 cm


Volume = r2h


= * * 3.5 * 3.5 * 12


= 154 cm3


More from this chapter

All 75 →
7

A lead pencil consists of a cylinder of wood with a solid cylinder of graphite filled in the interior. The diameter of the pencil is 7 mm and the diameter of the graphite is 1 mm. If the length of the pencil is 14 cm, find the volume of the wood and that of the graphite

8

A patient in a hospital is given soup daily in a cylindrical bowl of diameter 7 cm. If the bowl is filled with soup to a height of 4 cm, how much soup the hospital has to prepare daily to serve 250 patients?

2

Find the capacity in litres of a conical vessel with

(i) Radius 7 cm, slant height 25 cm


(ii) Height 12 cm, slant height 13 cm

3

The height of a cone is 15 cm. If its volume is 1570 cm3, find the radius of the base. (Use π = 3.14)

Questions · 75
13. Suface Areas and Volumes
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 10 1 2 3
Back to chapter
ADVERTISEMENT
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved