A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its volume.

detailed solution

Correct option is D

Given, a cone and its diameter=10.5 m and height=3 m.
Radius of the conical heap  .
  m
Height of the conical heap = 3 m.
We know, volume of the cone   .
Volume of the heap,
      
 
The volume of the heap is 86.625  .
Therefore, the correct option is 4.