Hurry asap the length of the hypotenuse of a right triangle is 137 units. the length of one leg of the triangle is 105. gina wrote the following step to find the length of the unknown leg: length of the unknown leg = 1372 − 1052 = 18,769 − 11,025 = 7,744 units which statement best explains whether gina's step is correct or incorrect? a it is incorrect because the length of the unknown side is the square root of 29,794. b it is incorrect because the length of the unknown side is the square root of 7,744. c it is correct because the length of the unknown side is the difference of the lengths of the sides. d it is correct because the length of the unknown side is the difference of the squares of the sides.