CBSE Class 8 Mathematics Worksheet - Mensuration 

Introduction

Mensuration is the branch of mathematics that deals with the measurement of geometric shapes, such as perimeter, area, and volume.

Key Concepts

Perimeter of a Rectangle

The perimeter of a rectangle is the distance around it. It can be calculated using the formula:

Perimeter = 2 × (Length + Breadth)

Area of a Rectangle

The area of a rectangle is the amount of space inside it. It can be calculated using the formula:

Area = Length × Breadth

Perimeter of a Square

The perimeter of a square is the distance around it. It can be calculated using the formula:

Perimeter = 4 × Side

Area of a Square

The area of a square is the amount of space inside it. It can be calculated using the formula:

Area = Side × Side

Perimeter and Area of a Triangle

The perimeter of a triangle is the distance around it. The area of a triangle can be calculated using the formula:

Area = (Base × Height) / 2

Perimeter and Area of a Circle

The perimeter of a circle is called its circumference. The area of a circle can be calculated using the formula:

Circumference = 2πr

Area = πr^2

Surface Area and Volume of 3D Shapes

The surface area of a 3D shape is the total area of its surface. The volume of a 3D shape is the amount of space inside it.

Formulae

- Perimeter of a rectangle: 2 × (Length + Breadth)

- Area of a rectangle: Length × Breadth

- Perimeter of a square: 4 × Side

- Area of a square: Side × Side

- Area of a triangle: (Base × Height) / 2

- Circumference of a circle: 2πr

- Area of a circle: πr^2

Important Points

- The perimeter of a shape is the distance around it.

- The area of a shape is the amount of space inside it.

- The surface area of a 3D shape is the total area of its surface.

- The volume of a 3D shape is the amount of space inside it.

Practice Questions

(A) Worksheet: https://t.me/cgscbsesupportbypramodsir/6