Find the length of the third side. If necessary, write in simplest radical form.

Answer:
[tex]\sqrt{13}[/tex]
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
The square on the hypotenuse h is equal to the sum of the squares on the other 2 sides, that is
h² = 2² + 3² = 4 + 9 = 13 ( take square root of both sides )
h = [tex]\sqrt{13}[/tex]