Q. Rachel, an engineering student, was asked to make a model shaped like a cylinder with two cones attached at its two ends by using a thin aluminium sheet. The diameter of the model is
3 cm and its length is
12 cm. If each cone has a height of
2 cm, find the volume of air contained in the model that Rachel made. (Assume the outer and inner dimensions of the model to be nearly the same.)
![465174_3511bc41251349ac9f4fdf744747e4b8.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/465174_3511bc41251349ac9f4fdf744747e4b8.png)