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 236

Find the volume of a sphere whose radius is

(i) 7 cm (ii) 0.63 m

(i) Radius (r) = 7 cm

Volume of Sphere = πr3


= * * 7 * 7 * 7


=


= cm3


(ii) Radius (r) = 0.63 m


Volume of Sphere = πr3


= * * (0.63) m3


= 1.0478 m3


More from this chapter

All 75 →
8

If the triangle ABC in the Question 7 above is revolved about the side 5 cm, then find the volume of the solid so obtained. Find also the ratio of the volumes of the two solids obtained in Questions 7 and 8

9

A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its volume. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas required

2

Find the amount of water displaced by a solid spherical ball of diameter

(i) 28 cm


(ii) 0.21 m

3

The diameter of a metallic ball is 4.2 cm. What is the mass of the ball, if the density of the metal is 8.9 g per cm3?

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