Pythagorean: a=80, b=100 c = 128.062485 Hypotenuse Copy Formula Usedc = √(80² + 100²) = √(6400 + 10000) = √16400 = 128.062485 Frequently Asked Questions If a=80 and b=100, what is c?c = √(6400+10000) = 128.062485.