How many balls, each of radius 1 cm, can be made from a solid sphere of lead of radius 8 cm?

Sum of volumes of balls that can be made from a large sphere will have same volume, as that of the sphere.

As we know that, volume of a sphere = . Given that, radius of large sphere, r1 is 8 cm and that of the small spheres, r2 is 1 cm.


Therefore, number of small balls that can be made from the big sphere =


spheres


2