Antonio parks his car in the parking lot of a mountain-biking area and then bikes 1.4 km along a level trail in a direction 20° east of north. He turns right through an angle of 140° and rides up a sloping trail with an angle of elevation of 15°. When Antonio reaches the top of a hill, his odometer indicates that he has come another 1.2 km. He notices that there is a path sloping downward directly back to the parking lot. Antonio takes this path, returning to his car. Determine the total distance that he rode his bike, to the nearest tenth of a kilometre. I​