Find the arc length and area of a sector with radius r and central angle θ. •You can answer either one, doesn’t have to be both.
•What I really need is how to do it more than just give me the answer.

Every weekday, mr. jones bikes from his home to his job. sometimes he rides along two roads, the long route that is shown by the solid lines. other times, he takes the shortcut shown by the dashed line. how many fewer kilometers does mr. jones bike when he takes the shortcut instead of the long route?