It sounds like you're just supposed to make up some side lengths... so here is an example you can use. But if there is an actual answer you're supposed to get you might need to just look up the dimensions of a real field. Hope this helps!
One field is 25 + 45 + 25 + 45 = 140 feet Second field is 40 + 60 + 40 + 60 = 200 feet. Therefore, all together, the two fields are 340 feet in perimeter together
