To understand the formula for the area of a square, it is helpful to refer to the provided model. In the model, the area is represented by the number of small squares that completely fill the larger square. Each small square corresponds to one unit of area.[br][br]A square has two important measurements: its length and its height. In a square, these two sides are always equal. Because of this equality, the area can be calculated simply by multiplying the length by the height.