Question

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

3 revolutions means the wheel spins all the way around 3 times.
That's the circumference spinning 3 times.

What'd the circumference?

Answer 2

A

Answer 3

its is actully d but i dont know how

Answer 4

oh sorry u have to find the circumference of the wheel frist i thought 21 was the radius but to get the circumference ou use pi witch = 3.14 * the diameter

Answer 5

because The wheel revolves three times. watch this gif

Answer 6

The Answer & Explanation:

Keys:
C=Circumference
D=Diameter
R=Radius
3.14=pi

How to find the circumference:
D=21
Divide that by 2
= 10.5

The formula for the circumference of a circle is

\[2\times3.14\times r\]

Plug in the numbers:
\[2\times3.14\times10.5\]

Which equals 65.94

Then, we have to multiply that by 3. So,

65.94 x 3 = 197.82

Which is our answer.