Through how many revolutions does a bike wheel with a 27 inch diameter rotate in traveling 1 mile (5280 feet). Answer to the nearest thousandth. Show work.
2006-10-08 09:33:10 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Divide the length (5280 ft) by the circumference (27 in). Make sure to convert feet to inches or inches to feet so that the units in the ratio are the same.
2006-10-08 09:43:03 · answer #1 · answered by Anonymous · 0⤊ 0⤋
First, calculate the circumference of the wheel (in feet) to 3 decimal places. If you can't do that, you have no business being in that math class in the first place.
Second, divide the circumference of the wheel into 5280. Extend the calculation to 3 decimal places. Again, if you can't do that, you have no business being in that math class in the first place.
The quutient you calculated in step 2 is the number of revolutions the wheel will make in a mile. If you don't understand why, you have no business being in that math class in the first place.
Doug
2006-10-08 16:42:23 · answer #2 · answered by doug_donaghue 7 · 0⤊ 0⤋
Use the fact that the circumference is equal to the diameter * pi. Don't forget to convert to feet before you determine the number of revolutions.
2006-10-08 16:40:26 · answer #3 · answered by James L 5 · 0⤊ 0⤋