Explain an activity to find the normal to a curved surface.

Write an activity to observe the light refraction at curved surface ?

Explain an activity to demonstrate decomposition.

A sphere , a cylinder and a cone are of the same radius and same height . Find the ratio of their curved surface areas .

The slant height of a right circular cone is 10 m and its height is 8 m. Find the area of its curved surface?

A sphere is inscribed in a cylinder. Is the surface of the sphere equal to the curved surface fo the cylinder ? If yes, explain how.

Take a cube of edge ‘l' cm. and cut it as we did in the previous activity and find total surface area and lateral surface area of cube.

Find the equations of the tangent and the normal to the curve y^(4)=ax^(3) at (a,a)