Pythagorean: a=36, b=80 c = 87.726849 Hypotenuse Copy Formula Usedc = √(36² + 80²) = √(1296 + 6400) = √7696 = 87.726849 Frequently Asked Questions If a=36 and b=80, what is c?c = √(1296+6400) = 87.726849.