What formula is used to calculate area?

The formula used to calculate the area of a rectangle is based on multiplying its length by its width. This is because area is defined as the amount of space within the boundaries of a two-dimensional shape. By multiplying the length and width, you can determine how many square units fit within that shape. For rectangles, the dimensions (length and width) correspond to the two sides that define the shape's space. Thus, the correct calculation for the area of a rectangle is length multiplied by width.

In contrast, other options do not represent the area of a rectangle. For example, adding length and width provides a sum of dimensions rather than an area measurement. Similarly, length multiplied by height is more relevant for volume calculations, particularly for three-dimensional figures such as prisms. Dividing width by height does not yield a meaningful result for area, as it does not reflect the relationship between the dimensions of the rectangular shape.