The distance that the rover will cover if it completes one circuit can be computed using the Pythagorean theorem and adding the sides of the rectangle. Rectangle: Width = 4 - 2 = 2 meters Length = 11 - 2 = 9 meters Triangle = 16 - 2 = 14 ; 14 - 2 = 12 meters (this is the short leg) long leg of the triangle = length of the rectangle = 9 meters.