Question

Suppose the radius of a circle is 3 units what is the circumference

Answer 1

Answer:

$6\pi$ or approximately $18.85$ units

Step-by-step explanation:

The formula for finding the circumference of a circle is $C=2\pi r$, where $C$ = circumference and $r$ = radius. In this case, $r=3$, so after plugging that into $C=2\pi r$, we get:

$C=2\pi r\\ = 2*\pi *3\\=6\pi$

Since $\pi$ is approximately $3.1415$, $6\pi =6*3.1415=18.849$, which rounds to $18.85$. Therefore, the circumference of the circle is $6\pi$, or approximately $18.85$ units. Hope this helps!