11. The minute hand of a clock is 8 inch long. How far (to the nearest tenth) does the tip of the
minute hand move in 45 minutes?
per hour
12. The diameter of each wheel of a bicycle is 30 inches. If you are traveling at 38 miles
on this bicycle, through how many revolution per minute are the wheels turning? Answer to
the nearest whole number.
13. Calculate the area of the shaded region in the given circle to the nearest hundredth, if the
radius is r = 10in.
072°
B
A