Question

The area of a rectangular field is 1600 sq m. If the length of the field is 80 m, find the perimeter of the field.

Answer 1

Given, area of the rectangular field = 1600 sq m

And length of the rectangular field = 80 m

We know that, area of rectangle = Length × Breadth

Let breadth of the rectangular field = b

Then, Area = 80 × b

⇒ 1600 = 80 × b

⇒ `1600/80 = (80 xx b)/80`  ...[Dividing both sides by 80]

⇒ b = 20 m

Now, perimeter of the rectangular field

= 2 × (Length + Breadth)

= 2 × (80 + 20)

= 2 × 100

= 200 m