1. Rafael rides his bike 3.5 kilometers. If the radius of the tire on his bike is 32 centimeters, determine the number of radians that a spot on the tire will travel during the trip.
2. A segment of a circle is the region bounded by an arc and its chord. Consider any minor arc. If is the radian measure of the central angle and r is the radius of the circle, write a formula for the area of the segment.