A shopkeeper has one spherical laddoo of radius 5 cm. With the same amount of material, how many laddoos of radius 2.5 cm can be made?
Given that, radius of a spherical laddoo = 5 cm
Volume of that laddoo, v = 4/3 πr3
⇒ 
We have 523.81 cm3 of material of laddoo.
Volume of laddoo of radius 2.5 cm = 
Then, laddoos that can be made out of 523.81 cm3 volume of laddoo material, of radius 2.5 cm can be found out as,
No. of laddoos = 523.81/65.48 = 8
Thus, 8 laddoos of radius 2.5 cm can be made out of the same amount of material.
9