Answer:
[tex]\large\boxed{C=6\pi\approx18.84}[/tex]
Step-by-step explanation:
The formula of a circumference of a circle:
[tex]C=2\pi r[/tex]
r - radius
We have r = 3.
Substitute:
[tex]C=2\pi(3)=6\pi[/tex]
You can use the approximation of a π:
[tex]\pi\approx3.14\\\\C\approx(6)(3.14)=18.84[/tex]