Answer:
[tex]\large\boxed{C=18\pi\ in\approx56.52\ in}[/tex]
Step-by-step explanation:
The formula of a circumference of a circle:
[tex]C=2\pi r[/tex]
r - radius
We have r = 9in. Substitute:
[tex]C=2\pi(9)=18\pi\ in[/tex]
[tex]\pi\approx3.14\\\\C\approx(18)(3.14)=56.52\ in[/tex]
