#### Question

A heap of wheat is in the form of a cone of diameter 9 m and height 3.5 m. Find its volume. How much canvas cloth is required to just cover the heap? (Use 𝜋 = 3.14).

#### Solution

Diameter of heap d =9m

Radius` =9/2m=4.5 m `

Height (h)=3.5m

Volume of heap =`1/3pir^2h`

=`1/3[3.14xx(4.5)^2xx3.5]m^3`

=`74.18m^3`

Slant height l`=sqrt(r^2+h^2)=sqrt((4.5)^2+(3.5)^2)`

= 5.70m.

Area of canvas required= CSA of cone

=` pirl`

=` 3.14xx4.5xx5.7m^2`

= `80.54m^2`

Is there an error in this question or solution?

Solution A Heap of Wheat is in the Form of a Cone of Diameter 9 M and Height 3.5 M. Find Its Volume. How Much Canvas Cloth is Required to Just Cover the Heap? (Use 𝜋 = 3.14). Concept: Surface Area of a Right Circular Cone.