Question 1041315
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Hi, I'm having trouble figuring out this problem:

How many feet does a wheel with a diameter of 16 inches travel after four revolutions?

Thank you.
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{{{4*pi*d}}} = {{{4*3.14*16}}} inches.


4 is the number of revolutions,
d is the diameter, {{{pi}}} = 3.14.


By the way, {{{pi*d}}} is the length of the circle with the diameter d.


What is difficult in it?