Find the length of the missing side. It’s a written response

Answer:
the missing side is [tex]\sqrt{89}[/tex]
Step-by-step explanation:
We use Pythagoras theorem
[tex]8^{2} +5^{2} =x^{2} \\64 + 25 = x^{2} \\89=x^{2} \\\sqrt{89} =x[/tex]