The seconds hand of an analog clock completes an entire rotation in 60 seconds and the length of the seconds hand is 5 inches. Approximately how far does the tip of the second hand travel in 3 minutes and 15 seconds

This size running track is usually called a 400 meter track. however if a person ran as close to the inside as possible on the track they would run less than 400 meters in one lap. how far away from the inside border would someone have to run to make one lap equal exactly 400 meters