Answer:
[tex]\sqrt{360}[/tex]
Step-by-step explanation:
Use Pythagorean Theorem:
[tex]a^2+b^2=c^2[/tex]
Plug in a=18 and b=6
[tex]18^2+6^2=c^2[/tex]
Simplify
[tex]360=c^2[/tex]
Thus when you square root both sides, you will get:
[tex]c=\sqrt{360}[/tex] which is also equivalent to 18.97 or [tex]6\sqrt{10}[/tex]
