A farmer builds a fence to enclose a rectangular pasture. He uses 160 feet of fence. Find the total area of the pasture if it is 50 feet long

Since the problem said he uses 160 feet of fence, you know that is the perimeterP=2 l +2 wYou know that one of the dimensions is 50, so you can plug that into the equation 160=2 x 50+2 w 160=100+2 w 2 w=60 w=30The area is equal to l x w 50 x 30=1500 square feet