The formula for the circumference of a circle is $${\mathtt{C}} = {\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{\pi}}{\mathtt{\,\times\,}}{\mathtt{r}}$$
If the radius is 3 feet, the problem would look like this:
$${\mathtt{C}} = {\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{\pi}}{\mathtt{\,\times\,}}\left({\mathtt{3}}\right)$$
After that, you can multiply the numbers:
$${\mathtt{C}} = {\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{3.14}}{\mathtt{\,\times\,}}{\mathtt{3}}$$
$${\mathtt{C}} = {\mathtt{18.84}}$$
Therefore, the circumference of the circle is 18.84 feet.
+3693 
here ya go, buddy! LOL
