Question

The radius of a bicycle wheel is 12 in. What is the approximate circumference of the wheel?

Answer 1

Well, the formula for circumference is:


`2πr`

We already know that
`r=12`, and that
`π=3.14`(Approximately), so we have everything we need.

Substitute:


`2πr`


`=2(3.14)(12)`


`=(24)(3.14)`


`=75.36`

The circumference of the bicycle wheel is approximately 75.36 inches.

Hope this helped!

~Cam943, Junior Moderator