Pythagorean: a=40, b=40 c = 56.568542 Hypotenuse Copy Formula Usedc = √(40² + 40²) = √(1600 + 1600) = √3200 = 56.568542 Frequently Asked Questions If a=40 and b=40, what is c?c = √(1600+1600) = 56.568542.