A circular sheet with radius 36 cm is divided into four equal sectors and one of them into a cone.
What is the curved surface area?

A rectangular sheet of metal 44cm long and 20cm broad is rolled along its length into a cylinder.Find the curved surface area of the cylinder.

The volume of a right circular cone is 9856 cm. If the diameter of the base is 28 cm. Find (i) the height of the cone (ii) slant height of the cone (iii) curved surface area of the cone