# Find the amount of water displaced by a solid spherical ball of diameter 0.21 m. - Mathematics

Find the amount of water displaced by a solid spherical ball of diameter 0.21 m.

["Assume "pi=22/7]

#### Solution

Radius (r) of ball = (0.21/2)m = 0.105 m

"Volume of ball "=4/3pir^3

=[4/3xx22/7xx(0.105)^3]m^3

= 0.004851 m3

Therefore, the volume of the sphere is 0.004851 m3.

Concept: Volume of a Sphere
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#### APPEARS IN

NCERT Class 9 Maths
Chapter 13 Surface Area and Volumes
Exercise 13.8 | Q 2.2 | Page 236