The Diameter of a tire is 2.5ft. Use this measurement to answers parts a and b

A- find the circumference of the tire
B- about how many times will the tire have to rotate to travel 1 mile

5 answers

A little tip should help
a. to find the circumference of the tire you need to multiply 3.14 by 2.5:
 = 3.14 x 2.5
 = 7.85 to round of it will be 8

b. to get the number of times the tire have to rotate to travel 1 mile:

1 mile = 5,280 ft
1 rotation is 7.85 
5,280/7.85 = 672.611465

If that helps
wow
thanks?
i got 672.611465, because 5280 divided by 7.85 = 672.611465. i got 7.85 by doing C= pi x 2.5. And since the mile/per feet was 5,280 feet. I divided that by the circumference.
For B part
Thank you so much @BmS Btw @hello you have to divide it by 8.