Question

Use the pythagorean theorem to find the missing length in the right triangle

Answer 1

The Pythagorean theorem is a^2+b^2=c^2. a and b are the legs of the triangle and c is the hypotenuse.
5^2+12^2=c^2
25+144=c^2
169=c^2
$\sqrt{169} =c$
c=13