21. Find the volume of paint required

The pillars of a castle are shaped like a cone surmounted on a cylinder of height 24 $m$. The radius of the pillar is 21 $m$ and the slant height is 8 $m$. If there are 12 congruent pillars in the castle and each litre of paint can cover 13 $m^2$, then find the total volume of paint required. [Hint: Use $\pi = \frac{22}{7}$.]

 

 

Answer:

 

The total volume of paint required is  litres.

 

[Note: Enter the answer rounded to the whole number.]