two paths each of width2.5 run across the middle of a rectangular field of15 long and 9m wide.find the area of the paths.

horizontal path = 15(2.5) = 37.5 units^2

vertical path = 9(2.5) = 22.5 units^2

total = 60 units^2
BUT, we counted the intersection of the paths twice, so we have to subtract 2.5(2.5) or 6.25 units^2

leaving us with 63.75 units^2