Answer:
A
Step-by-step explanation:
For this, you use the Pythagorean Theorem ([tex]a^2 + b^2 = c ^2[/tex])
You have the value of a (13) and the value of c (15), so you can substitute that into the formula:
[tex]13^2 + b^2 = 15^2[/tex]
[tex]169 + b^2 = 225[/tex]
subtract 169 from both sides
[tex]b^2 = 56[/tex]
[tex]b = \sqrt{56}[/tex]
Putting it into simplest radical form,
b = [tex]2\sqrt{14}[/tex]
