How many revolutions are made by a 28inch bicycle wheel min over one mile
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.
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. :-)
To calculate how many revolutions a 28-inch bicycle wheel makes in one mile, we need to know the circumference of the wheel.
The circumference of a circle can be calculated using the formula: C = π * d, where C is the circumference, π (pi) is a mathematical constant approximately equal to 3.14159, and d is the diameter of the circle.
Since the diameter is given in the question as 28 inches, we can calculate the circumference as follows:
C = π * d
C = 3.14159 * 28
C ≈ 87.9646 inches
Now, to find the number of revolutions in one mile, we need to convert the mile into inches. Knowing that there are 5,280 feet in a mile and 12 inches in a foot, we can calculate the number of inches in a mile:
1 mile = 5280 feet = 5280 * 12 inches = 63,360 inches
To find the number of wheel revolutions, we divide the distance in inches by the circumference of the wheel:
Number of revolutions = Distance in inches / Circumference
Number of revolutions = 63,360 inches / 87.9646 inches
Number of revolutions ≈ 719.69
Therefore, a 28-inch bicycle wheel would make approximately 719.69 revolutions in one mile.