Rectangle - Properties - Area - Perimeter
Rectangle is a four-sided geometric shape of which all internal angles are 90° and opposite sides are parallel and equal.
Properties of a Rectangle:
- has four sides
- opposite sides are parallel and equal
- all angles are 90°
What is the perimeter of a Rectangle?
The perimeter of a rectangle is the length of all its 4 sides. Formula to calculate the perimeter of a rectangle is:
Perimeter of Rectangle = 2 × Length + 2 × Breadth
The perimeter can be represented using a model as below.
Perimeter of Rectangle = 2 × Length + 2 × Breadth
The perimeter can be represented using a model as below.
Perimeter = Length + Breadth + Length + Breadth
= 2 × Length + 2 × Breadth
Length + Breadth = Perimeter ÷ 2
What is the formula to calculate Area of a Rectangle?
Area of Rectangle = Length × Breadth
Let's find the area of the rectangle below.
To find the area of the rectangle, we find out how many one-centimetre squares we can fit into the rectangle.
Area of the rectangle = 4 × 2
= 8 cm2
We need 8 one-centimetre squares to make a rectangle 4 cm long and 2 cm wide.
The area of the rectangle is 8 cm2.
Let's find the area of the rectangle below.
To find the area of the rectangle, we find out how many one-centimetre squares we can fit into the rectangle.
Area of the rectangle = 4 × 2
= 8 cm2
We need 8 one-centimetre squares to make a rectangle 4 cm long and 2 cm wide.
The area of the rectangle is 8 cm2.