Correct Answer - Option 4 : 1440 m

**Given: **

Length of rectangular field = 200 m

Breadth of rectangular field = 160 m

**Formula Used:**

Perimeter of rectangle = 2 (Length + breadth)

**Calculation:**

Perimeter of rectangle = 2 (Length + breadth)

The perimeter of rectangle = Perimeter of the rectangular field

Perimeter of the rectangular field = 2 (200 + 160)

Perimeter of the rectangular field = 2 × 360 = 720 m

Length of rope needed = 2 × Perimeter of rectangular field

**∴ Length of rope needed = 2 × 720 m = 1440 m **