Question

What is the side length b in the triangle below?

Answer 1

use the pythagorean theorem a^2 + b^2 = h^2 where a and b are the sides and h is the hypotenuse.

this gives you 12^2 + b^2 = 20^2
then solve for b

Answer 2

16

Answer 3

Yeah 16 is the answer :)