SOLUTION: the wheels of a truck travelling at 60 km/h make 4 revolutions per second. What is the diameter of each wheel in metres

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Question 736358: the wheels of a truck travelling at 60 km/h make 4 revolutions per second. What is the diameter of each wheel in metres
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
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the wheels of a truck travelling at 60 km/h make 4 revolutions per second.
What is the diameter of each wheel in metres
:
Find the distance traveled by the wheel in 1 sec
:
60000%2F3600 = 162%2F3 meters traveled in on sec
:
At 4 rps
4*pi*d = 162%2F3
d = 16.6667%2F%284%2Api%29
d = 1.3263 meters is the diameter of the wheel
:
:
Check that
%281.3263%2Api%2A4%2A3600%29%2F1000 ~ 60 km/hr