To find the area of the square, we can use the formula A = s^2, where s is the length of a side of the square. In this case, s = 9, so the area of the square is A = 9^2 = 81 square units.

To find the altitude of the parallelogram, we need more information. The altitude of a parallelogram is the perpendicular distance between the base and the opposite side. Without knowing the length of the opposite side or any angles, we cannot determine the altitude.