How do you find a diameter if you have a circumfrence of 40?

May 22, 2018

The diameter is 12.74.

Explanation:

The formula to find the circumference is $\pi d$, or $\pi$ multiplied by the diameter of the circle. $\pi = 3.14$

In this question, you are simply doing it backwards.

If $\pi d$ equals the circumference of $40$, $\frac{40}{\pi}$ will equal the diameter.

$\frac{40}{\pi} = 12.74$