3. (25 Points) The arch of a bridge is a semiellipse with a horizontal major axis. The span is 30 ft, and the top of the arch is 10 ft above the major axis. The roadway is horizontal and is 2 ft above the top of the arch. Suppose that you are standing 5 ft away from the center of the semiellipse. Find the vertical distance from the roadway to the arch from where you are standing