Answer:To find the length of the third piece of rope, we can use the fact that the total length of the rope is 35 meters and the lengths of the first two pieces are known. Let the length of the third piece be meters. Given: - Length of the first piece = 13.85 meters- Length of the second piece = 11.36 meters- Total length of the rope = 35 meters We can set up an equation to represent the total length of the rope: Now, we can solve for : Therefore, the length of the third piece of rope is 9.79 meters.