EXPLANATION
We can get the circunference of the circle by applying the Pythagorean Theorem as shown as follows:
[tex]\text{AC}^2=AB^2+BC^2[/tex]
Repalcing terms:
[tex]AC^2=12^2+5^2=144+25=169[/tex]
Aplying the square root to both sides:
[tex]AC^{}=\sqrt[]{169}=13\text{ inches}[/tex]
The circunference is 13 inches.
