Question

Rafael races his bicycle for
58m
. A wheel of his bicycle turns
29
times as the bicycle travels this distance. What is the diameter of the wheel?
Use the value
3.14
for
π
. Round your answer to the nearest tenth. Do not round any intermediate steps.

Answer 1

So treat the wheel as a circle that will open up into a line, hence a perimeter of the wheel = distance travelled for 1 turn of the wheel.
58m = 29turns
58m=29x (perimeter of wheel) = 29 x (πx diameter) 
2 = 3.14 x (diameter)
diameter = 0.6369 = 0.64(nearest tenth) 

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