Help): please Please

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.

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Can someone pls ! pls answer all. no explanation needed..