A heap of wheat is in the form of a cone of diameter 9m and height 35m Find its volume How much canv...

Question

A heap of wheat is in the form of a cone of diameter 9m and height 35m Find its volume How much canvas cloth is required to just cover the heap Use 314

Accepted Answer

ANSWER It is given that The diameter of the conical heap 9m Radius of the conical heap 92 45m Height of the conical heap 35m We know that The volume of the conical heap 13 r2h By substituting the values The volume of the conical heap 13 314 452 35 On further calculation The volume of the conical heap 314 15 45 35 So we get The volume of the conical heap 741825 m3 We know that Slant height l r2 h2 By substituting the values l 452 352 On further calculation l 325 So we get l 57 m We know that The curved surface area of the conical heap rl By substituting the values The curved surface area of the conical heap 314 45 57 On further calculation The curved surface area of the conical heap 8054 m2 Therefore 8054 m2 of the canvas is required to cover the heap of wheat

RS Aggarwal Solutions Class 9 Mathematics Solutions for Volume And Surface Area Of Solids Exercise 15C in Chapter 15 - Volume And Surface Area Of Solids