Help asap. I am confused please put the answer

Answer:
17.6706
Step-by-step explanation:
we know that in a rectangle triangle we can apply the Pythagorean theorem
[tex]16^2+7.5^2=x^2[/tex]
so [tex]x^2=256+56.25=312.25\\[/tex]
[tex]x = \sqrt{312.25} = 17.6706[/tex]