A hollow sphere has an outer radius of 6 cm and inner radius of 3 cm. What is the volume of this hollow sphere?

252p cm³

We know that,

Volume of the hollow sphere = V = \(\frac{4}{3}\) ×  π × (R³ - r³)

We have,

Outer radius (R) = 6 cm

Inner radius (r) = 3 cm

= \(\frac{4}{3}\) × π × (6³- 3³)

=\(\frac{4}{3}\) × p  × (216 - 27) 

=\(\frac{4}{3}\) × ​p  ​× (189)​​ = 252 p ​ cm³