yeah I still don't get how the pythagorean theorem works sue me.

Answer:
22.25
Step-by-step explanation:
Pythagorean theorem is a^2+b^2=c^2
a---leg a=17
b---leg b=?
c----hypotenuse c=28
[tex]17^2+b^2=28^2\\289+b^2=784\\b^2=495\\\sqrt{b^2}=\sqrt{495}\\b = 22.25[/tex]