Question

WILL MEDAL AND FAN

A wheel has a diameter of 21 inches.

Approximately how far does it travel in 3 revolutions?

A.
63 in.

B.
65.94 in.

C.
98.91 in.

D.
197.82 in.

Answer 1

You'll need to find the circumference of the wheel. What is the formula for circumference as a function of the wheel radius (r)? Each time the wheel makes one full turn, its axle moves as far forward as the circumference is long.

Answer 2

So: How far forward does the axle of the wheel move as a result of three turns of the wheel?

Answer 3

so i got 395.64

Answer 4

Could you possibly show y our work?

Answer 5

If a wheel has a diameter "d", then the circumference is π•d.

The distance you travel in one revolution is an equivalent of
traveling the distance of that circumference.

So if you travel r number of revolutions, then you will travel
the distance or r circumferences.

If 1 circumference is π•d, then r circumferences is r•π•d.