<PRE><B>Question 1092521</B>
My bike reached a speed of 36 miles per hour.
 My bike tires have a radius of 14 inches.
Find the circumference of the tire
C = {{{2*pi*14}}}
C = 87.9646 inches
:
If I maintained this speed for 30 seconds, how many revolutions did my bike tire make?
there are 120 30 sec periods in an hour
Find the no. of inches traveled in 1 hr at 36 mph, divide by the period and the circumference
R = {{{(36*5280*12)/(120*87.9646)}}}
R = 216.1 rev</PRE>