How do I solve this?

David must install fencing around a lot that is shaped like a right angle.the side of lot that runs east-west is 200 ft long.the side of the lot runs north-south is 125 ft long.calculate how many feet of fencing he will need to surround the entire lot.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

41/17 as a decimal rounded to the nearest hundredth