How is the area of a rectangle calculated?

The area of a rectangle is calculated using the formula that multiplies the length by the width (L x W = A). This formula effectively determines the total space within the boundary of the rectangle. By multiplying the two dimensions, you account for the entire two-dimensional surface of the rectangle.

Other formulas, such as adding the length and width or using subtraction, do not accurately represent the concept of area. Additionally, the formula for the perimeter, which involves adding the sides together and multiplying by two, also does not calculate area but rather the distance around the rectangle. Thus, the multiplication of length and width is the correct mathematical approach for finding the area of a rectangle.