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.

Solution

## Side of the square = 80 cm Area of square = Side $×$ Side = 80 $×$ 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 cmMathematicsRD Sharma (2013)Standard VI

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