A ball with diameter 5 inches starts at point A to roll along the track shown. The track is comprised of 3 semicircular arcs. The first two arcs are concave down, and the third arc is concave up. Their radii are inches, inches, and inches, respectively. The ball always remains in contact with the track and does not slip. What is the distance the center of the ball travels over the course from A to B? 
