# If a circle has the diameter of 8, what is the circumference?

Jan 26, 2016

$C i r$$c u m f e r e n c e = 25.14 \ldots \ldots$

#### Explanation:

$N o t e$ $t h$$a t$ $\pi = \frac{22}{7}$

$R a \mathrm{di} u s = r$

$R a \mathrm{di} u s$ $o$$f$ $c i$$r c l$$e$$= \frac{D i a m e t e r}{2} = \frac{8}{2} = 4$

$C i r$$c u m f e r e n c e$$= 2 \pi r = 2 \pi \left(4\right) = 8 \pi$

$\rightarrow = 8 \cdot \frac{22}{7} = \frac{176}{7} = 25.14 \ldots \ldots$