Freddie is at chess practice waiting on his opponent's next move. he notices that the 4-inch-long minute hand is rotating around the clock and marking off time like degrees on a unit circle.

part 1: how many radians does the minute hand move from 3: 35 to 3: 55? (hint: find the number of degrees per minute first.)
part 2: how far does the tip of the minute hand travel during that time?