Olympic cyclists use a bicycle wheel with a diameter of approximately 0.66 meters. How many revolutions does the wheel make in a 30km rac (1 km=1000m)? Express your answer to the nearest 10 revolutions.
Olympic cyclists use a bicycle wheel with a diameter of approximately 0.66 meters. How many revolutions does the wheel make in a 30km rac (1 km=1000m)? Express your answer to the nearest 10 revolutions.
How far will the bike travel when the wheel makes 1 revolution? It will travel a distance equal to the circumference of the wheel.
Recall that
Circumference = pi * diameter
You know that the diameter of the wheel is 0.66m, so you should be able to find the circumference easily. (the unit for the circumference will be meters) This is the distance covered in 1 revolution.
How many meters does the bike cover in a 30km race? How many revolutions will it take to cover this number of meters?
I hope this helps you. If you still have questions, please repost showing all of the work you have done to solve the problem.
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