# NCERT Class 8 Mathematics Chapter 11 Mensuration CBSE Board Sample Problems

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## Mensuration

 Sr. no Term Description 1. Mensuration It is branch of mathematics which is concerned about the measurement of length, area and Volume of plane and solid figure. 2. Perimeter The perimeter of plane figure is defined as the length of the boundaryIt units is same as that of length i.e. m, cm, km 3. Area The area of the plane figure is the surface enclosed by its boundaryIt unit is square of length unit. i.e.

### Shapes Where Area and Perimeter Are Known

Important Terms to remember in case of solid figures

 Surface Area Surface Area of a solid is the sum of the areas of its faces Lateral Surface Area The faces excluding the top and bottom make the later Surface Area of the solid Volume Amount of space occupied by a three dimensional object (solid figure) is called its volume.We use square units to find the area of a two dimensional region. In case of volume we will use cubic unit to find the volume of a solid, as cube is the most convenient solid shape (just as square is the most convenient shape to measure area of a region)Volume is sometimes refer s capacity also