What are the different terms in solid mensuration?

Answer 1

1. Plane Figures

- A flat, closed figure that is in a plane

- A plane figure can be made of straight lines, curved lines, or both straight and curved lines.

2. Solid Figures

- The figures which occupy space are called solids.

- Solids are three dimensional figures i.e., they have length, breadth & height.

- There are two important facts related to solids-

a. Every solid has a surface area. Some solids have plane surfaces, others have curved surfaces.

b. Every solid has a 'bulk' & its bulk occupies some space.

3. Surface area-It is the sum of areas of all visible (exposed) surfaces of a solid.

4. Volume-It is the three dimensional space occupied by a solid, liquid or gas.

5. Lateral surface area - is the sum of the surface areas of all its faces excluding the base.

6. Total surface area - is the sum of the surface areas of all its faces including the base.