Answer:
First, we need to find the area of Site A and Site B. The area of a rectangle is found by multiplying its length and width, so:
Site A: 60 m x 40 m = 2400 m^2
Site B: 45 m x 40 m = 1800 m^2
Next, we need to find the perimeter of each site, which is the distance around the edges of the rectangle. The perimeter is found by adding up the lengths of all four sides, so:
Site A: 2 x (60 m + 40 m) = 2 x 100 m = 200 m
Site B: 2 x (45 m + 40 m) = 2 x 85 m = 170 m
Finally, to find the total amount of rope needed, we add up the perimeters of both sites:
200 m + 170 m = 370 m
So, we need a total of 370 meters of rope to rope off both sites.