Question

Find the amount of water displaced by a solid spherical ball of diameter 4.2 cm, when it is completely immersed in water.

Answer 1

Given: Diameter of spherical ball = 4.2 cm

Now, radius of spherical ball (r) = `4.2/2` cm = 2.1 cm

Amount of water displaced by solid spherical ball = Volume of solid spherical ball

So, volume of spherical ball = `4/3 pir^3`

= `4/3 xx 22/7 xx (2.1)^3`

= `88/21 xx 21/10 xx 21/10 xx 21/10`

= 38.808 cm³

Therefore, the amount of water displaced by solid spherical ball when it completed immersed in water is 38.808 cm³.