We had found area of rectangle by counting the squares
But, that method is too long
To find area of any rectangle,
We use formula
For a rectangle with length l and breadth b
Area of rectangle = l × b
Comparing counting the squares method to formula
Find area of rectangle with length 10 m and breadth 15 m
Length = l = 10 m
Breadth = b = 15 m
Area of rectangle = l × b
= 10 × 15
= 150 sq. m
= 150 m 2