Question

A rectangle has the area equal to that of a square of side 80 cm. If the breadth of the rectangle is 20 cm, find its length.

Answer 1

Side of the square = 80 cm
Area of square = Side $\times$ Side = 80 $\times$ 80 = 6400 cm²
Given that:
Area of the rectangle = Area of the square = 6400 cm²
Breadth of the rectangle = 20 cm
Applying the formula:
Length of the rectangle = $\frac{Area}{Breadth}$
We get:
Length of the rectangle = $\frac{6400}{20}$ = 320 cm