Question

A farmer has a rectangular field of length and breadth 240 m and 180 m respectively. He wants to fence it with 3 rounds of rope as shown in the figure. What is the total length of rope he must use?

Answer 1

The farmer has to cover three times the perimeter of that field.

Therefore, the total length of rope required is thrice its perimeter.

Perimeter of the field = 2 × (length + breadth)

= 2 × ( 240 m + 180 m)

= 2 × 420 m

= 840 m

Total length of rope required = 3 × 840 m = 2520 m.