# If the circumference of a circle is 25cm, what is its Diameter?

Sep 28, 2015

$7.96$

#### Explanation:

$\pi d$= circumference.

So,

$\pi d = 25$

Make $d$ the subject of the equation.

$d = \frac{25}{\pi}$
$d = 7.96$ $\Rightarrow$ (rounded to 3 s.f)