9. A running track that encircles a football field has six running lanes, each one meter...
9. A running track that encircles a football field has six running lanes, each one meter wide. The straight portions of the track on either side of the football field are 110 meters long. The outside ends of the track are semicircles with diameter 40 meters. What is the surface area of the running track? (The area of a circle is A = pi*(radius)? )