Basically, they are asking you to find the perimeter of the Football field. To find the perimeter of a rectangle (the shape of the Football field), you have to do 2(length) + 2(width).
Since the length is 360 feet, we have to do 2 x 360, or 360 + 360. We get the number 720 from this.
Since the width is 160 feet, we have to do 2 x 160, or 160 + 160. We get the number 320 from this.
Now that we have those two numbers, we have to add them up. 720 + 320 = 1,040. So, the correct answer is 1,040 feet.
