Question

The area of a rectangle is 100 cm². If the breadth of the rectangle is 5 cm, find its perimeter.

Answer 1

$\large\mathfrak{Given:-}$

• Breadth of rectangle = 5 cm

• Area of rectangle = 100 cm ²

$\large\mathfrak{Find:-}$

• length of rectangle

• Perimeter of rectangle

$\large\mathfrak{Solution: -}$

Area of rectangle = length × breadth

100 cm ² = length × 5 cm

$\tt \: \frac{100 \: cm {}^{2} }{5 \: cm} \: = length$

20 = length

Perimeter of rectangle = 2 (length + breadth )

= 2 ( 20 cm + 5 cm )

= 40 cm + 10 cm

= 50 cm

Hence, the Perimeter of rectangle = 50 cm.