Prove h^2=p^2+b^2 can anyone me

If this is for the Pythagorean Theorem where h is the hypotenuse, p is the perpendicular leg, and b is the base leg, most commonly stated as , then there are literally dozens and dozens of proofs. I attach a screenshot from Alexander Bogomolny's blog at UMass Boston. On this page alone (which you can find with a Google search), he has 54 different proofs of the Pythagorean Theorem! I bet you can write your own... 

The answer you want is 1.3*10^-5