A solid metallic sphere of radius 8 cm is melted and into spherical balls each of radius 2 cm. Find the number of spherical balls obtained.
Given,
Radius (R) of the solid metallic sphere = 8 cm
Radius (r) of the spherical ball = 2 cm
Now,
The number of spherical balls obtained = 
= (R/r)3
= (8/2)3
= 43
= 64
So,
The number of spherical balls obtained is 64.
17