Question

Find the length of the missing side. Leave your answer in simplest radical form.

Answer 1

Answer:

$\sqrt{69}$

Step-by-step explanation:

from the pythagorean theorem:

$a^2 + b^2 = c^2\\10^2 + b^2 = 13^2\\100 + b^2 = 169\\b^2 = 69\\b = \sqrt{69}$