#surfaceareasandvolumesclass9 SURFACE AREAS AND VOLUMES CHAPTER 11 , CLASS IX,
Example 1 : Find the curved surface area of a right circular cone whose slant height
is 10 cm and base radius is 7 cm.
Example 2 : The height of a cone is 16 cm and its base radius is 12 cm. Find the
curved surface area and the total surface area of the cone (Use π = 3.14).
2. Find the total surface area of a cone, if its slant height is 21 m and diameter of its base
is 24 m.
4. A conical tent is 10 m high and the radius of its base is 24 m. Find
(i) slant height of the tent.
(ii) cost of the canvas required to make the tent, if the cost of 1 m2
canvas is ` 70