## Assume π=722, unless stated otherwise.
9. 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. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas required.
a. Find its volume.
b. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas required.