3) In a triangle, one side is twice the smallest side. The third side is 2 less than 3 times the smallest side. The perimeter is 40 inches. Find the three side lengths of the triangle. 4) The width of a rectangle is 8 ft more than twice the length. If the perimeter of the rectangle is 52 feet, find the length and width of the rectangle. 5) Sam is fencing his yard that is 42 feet long and 120 feet wide. He wants to put fencing around the entire perimeter of his yard. The fencing costs $4.25 per foot. How much will it cost to fence his yard?