If the square of the hypotenuse of an Isosceles right triangle is 200cm square ,then the length of each side will be. Share with your friends Share 0 Arshita Pandey answered this Dear Student, Regards 0 View Full Answer Sahil Raj answered this Let the sides of a right isosceles triangle be x and x. Therefore, H-square = x-square + x-square = 200 = 2x-square = x-square = 100 = x = 10cm. 0