how many turns does a wheel need with radius of 14.0 inches to cross a 1.00 mile track?

Question

mrnood · Answer

first work out the circumference of the wheel ( the formula has pi and r in it)

The work out how many inches in a mile:

1ft = 12 ins
1 yd = 3 ft
1760 yds = 1 mile

The divide that number by the circumference - that's how many times it must turn to roll 1 mile

michele_laino · Answer

please note that if I call N your number of turns, then we have:
$$2*\pi*r*N=\Delta s$$
where Delta s=1 mile, and r is the radius of your wheel. Please solve the above equation in order to find N

anonymous · Answer

my answer is 1.39x10^-3 is this correct?

michele_laino · Answer

@bunagans  Sorry, please retry!

michele_laino · Answer

@bunagans  keep in mind that 1 mile=63,360 inches

calculusfunctions · Answer

You need to show your work first. First find the distance covered in one revolution (find the circumference of the circle). Also convert miles to inches.