If you open math book you will find a lot of mathematical questions but
you should have solve this question.
It is from class 10 rd sharma chapter 16 mensuration .
we have to find the number of the cones formed from a solid
metallic sphere of radius 5.6 cm is melted and solid cones each of radius 2.8 cm
and height 3.2 cm are made. Find the number of such cones formed.