3. The base of a shipping drum is in the shape of a circle with a diameter of 20 inches. Which of the following is closest to the circumference of the base of the shipping drum? (Use 3.14 for r.)
Circumference = 2

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?