Q : 10 In Fig. , you see the frame of a lampshade. It is to be covered with a decorative cloth. The frame has a base diameter of and height of . A margin of is to be given for folding it over the top and bottom of the frame. Find how much cloth is required for covering the lampshade.
Given, a cylindrical lampshade
Daimeter of the base =
Height of the cylinder =
Total height of lampshade=
Curved surface area of a cylinder of radius and height =
Now, Cloth required for covering the lampshade = Curved surface area of the cylinder
Therefore, cloth will be required for covering the lampshade.