Question 301685
A radius with a gear of 4 inches turns though an angle of 7(pi)/8 radians. WHat distance does a point on the edge of the gear travel as the gear turns through this angle? Round your answer to the nearest tenth. 
------------
Or a gear with a radius ....
Using radians makes it easy:
s = r*angle
s = 4*7*pi/8 = 7pi/2 inches
s =~ 11 inches