Answer:
It should be 11 units
9.2
Step-by-step explanation:
Use the Pythagorean Theorem [tex]a^2+b^2=c^2[/tex]
[tex]2^2+9^2=c^2\\4+81=c^2\\85=c^2\\c=\sqrt{85} \\c=9.2[/tex]
