Area-703m2 length-19 find the area of a square whose perimeter is equal to the perimeter of a long rectangle.

Let’s calculate the side of the rectangle by its area (703 m ^ 2) and side (19 m): 703: 19 = 37 meters.
Let’s calculate the perimeter of a rectangle in two dimensions (19 meters and 37 meters): (37 + 19) * 2 = 112 meters, such a perimeter and a square.
Let’s calculate the side of the square along its perimeter (112 meters): 112: 4 = 28 meters.
Let’s calculate the area of the square along the known side (28 meters): 28 * 28 = 784 (m ^ 2).
Answer: 784 square meters square.