Question

Find the breadth of a rectangular plot of length 45 m having perimeter 140 m also, find its area?

Answer 1

length l = 45 m and perimeter p= 140 m Let breadth be b

So, 2(l+b) = p ⇒ l+b = p/2 = 70

⇒b= 70-45 = 25 cm

Breadth = 25 cm

Area A= l*b = 25*45 = 1125 cm²

Answer 2

length l = 45 m and perimeter p= 140 m Let breadth be b

So, 2(l+b) = p ⇒ l+b = p/2 = 70

⇒b= 70-45 = 25 cm

Breadth = 25 cm

Area A= l*b = 25*45 = 1125 cm²