Question

A metallic spherical ball of radius r was melted and recasted into spherical balls of radius r2.How many small balls can be obtained

Answer 1

Step-by-step explanation:

Let , radius of spherical ball be R,

And radius of 8 identical balls be r,

According to question,

Volume of larger sphere =8×volume of 8 identical balls

34πR3=8×34πr3

⟹R3=8×r3

Hence, R=2r