Question

In a rectangle, perimeter - 5m, breadth - 90,length - ?, area - !

Answer 1

Answer:

Length = 160 cm

Area = 14400 cm / 144 m

Explanation:

Given,

 Perimeter - 5 m - 500 cm

 Breadth - 90 cm

 Length - l

Perimeter of a rectangle - 2( l + b )

⇒ 500 = 2( l + b )

⇒ 500 = 2( l + 90 )

⇒ 500 = 2l + 180

⇒ 500 - 180 = 2l

⇒ 320 = 2l

⇒ 160 = l

⇒ ∴ l = 160 cm

Area of a rectangle - l × b

⇒ 160 × 90

⇒ 14400 cm

⇒ $\frac{14400}{100}$

⇒ ∴ 144 m

I hope this helps :)