Question

A bicycle wheel has a diameter of 28 inches. Which expression can be used to describe the circumference of the wheel as it relates to diameter?

Answer 1

Given:

The diameter of a bicycle wheel is 28 inches.

To find:

The circumference of the wheel as it relates to diameter.

Solution:

We have,

Diameter:
`d=28\text{ inches}`

We know that,

Radius:
`r=(d)/(2)`

`r=(28)/(2)\text{ inches}`

The circumference of a circle is

`C=2\pi r`

Putting
`r=(28)/(2)`, we get

`C=2* \pi * (28)/(2)`

`C=28* \pi`

Therefore, the correct option is (H).