Question

pied by pall. A steel ball is melted down to make eight smaller identical balls. If the radius of the original steel ball was 20 cm, calculate to the nearest millimetre the radius of each of the smaller balls.​

Answer 1

Answer:

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

3

4

πR

3

=8×

3

4

πr

3

⟹R

3

=8×r

3

Hence, R=2r