# The diameter of Joe's car wheel is 18 inches. What is the circumference to the nearest inch?

Jun 10, 2017

The circumference of the wheel is, to the nearest inch, $57$ inches.

#### Explanation:

To solve this problem, we need to recall the formula for the circumference of a circle:

$C = 2 \pi r = \pi d$

Now, we substitute $18$ inches for the diameter in the formula:

$C = \pi \left(18\right)$

We can then multiply $18$ by $\pi$ and round the answer to the nearest inch:

$18 \pi \approx 56.54 \approx 57$ inches.