Asked by maria
How many revolutions are made by a 28inch bicycle wheel min over one mile
Answers
Answered by
Ms. Sue
C = pi * r^2
C = 3.14 * 14^2
C = 615.44 inches
1 mile = 63,360 inches
Divide the inches in a mile by the circumference.
C = 3.14 * 14^2
C = 615.44 inches
1 mile = 63,360 inches
Divide the inches in a mile by the circumference.
Answered by
Ms. Sue
Ooops! I goofed.
I used the formula for the area, not the circumference.
C = pi * d
C = 3.14 * 28
C = 87.92 inches
63,360 / 87.92 = 720.655141 revolutions
Sorry for the error. I hope it didn't cause too much confusion.
And thank you, Reiny. :-)
I used the formula for the area, not the circumference.
C = pi * d
C = 3.14 * 28
C = 87.92 inches
63,360 / 87.92 = 720.655141 revolutions
Sorry for the error. I hope it didn't cause too much confusion.
And thank you, Reiny. :-)
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