Q3 of 38 Page 126

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

When a solid spherical ball is immersed completely in water, it displaces volume of water equals to its own volume.

Given is, Diameter of spherical ball = 4.2 cm


⇒ radius of spherical ball = 4.2/2 = 2.1 cm


So, volume of a sphere is given by


Volume = 4/3 πr3



Thus, volume of water displaced is 38.81 cm3.


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