Theory:

“Nature is an infinite sphere of which the centre is everywhere and the circumference nowhere”.
- Blaise Pascal
Mensuration is an area of mathematics that deals with the analysis of various geometrical shapes. It also discusses the areas and volumes of such geometrical figures.
We have learned about plane figures like squares, rectangles, triangles, circles, etc. These are two-dimensional figures, which can draw in a plane. However, we cannot represent most of the items we see in our daily lives on a plane like glass, birthday cap, bowl, water tube, etc. These items are known as three-dimensional figures or solid figures.
 
In this section, let us learn about the surface area of three-dimensional objects like the right circular cylinder, hollow cylinder and right circular cone.
 
cylinder.png
Right circular cylinder
9.pngHollow cylinder
cone.png
Right circular cone