what is the length of the hypotenuse of the triangle below

Answer:
18
Step-by-step explanation:
If right triangle:
[tex]a^{2} +b^{2} = c^{2}[/tex]
[tex](9\sqrt{2}) ^{2}[/tex]+[tex](9\sqrt{2}) ^{2}[/tex]= [tex]c^{2}[/tex]
162 +162 = [tex]c^{2}[/tex]
324 = [tex]c^{2}[/tex]
c = 18