We have container consists of 2 cylinder such that inner cylinder is a solid cylinder whose radius is `r` and outer cylinder is a hollow cylinder whose radius is `R` and height `h`, the volume of fluid it can hold is

Options

A. `pi r^2 h`
B. `pi R^2 h`
C. `pi (R^2 - r^2) h`
D. `pi (R^2 + r^2) h`

Answer

C