Answer:
[tex]18\pi \sqrt{2}[/tex]
Step-by-step explanation:
We are given the length of two sides of the triangle (represented by the congruent tickings), we will use pythagorean theorem to find the length of the diameter.
[tex]a^2 + b^2 = c^2[/tex]
18^2 + 18^2 = [tex]\sqrt{648}[/tex]
Based on the work above, the diameter is [tex]\sqrt{648}[/tex]
Solve for circumference using the following formula:
[tex]C= D\pi[/tex]
[tex]C= \sqrt{648}\pi[/tex]
Hence, c = 79.97 or [tex]18\pi \sqrt{2}[/tex]
