What formula is used to calculate the area of a rectangle?

The formula used to calculate the area of a rectangle is found by multiplying its length by its width. This is because the area represents the total amount of space inside the rectangle, measured in square units. When you take the length of the rectangle and the width of the rectangle and multiply them together, you are essentially counting how many unit squares can fit into the rectangle.

For instance, if a rectangle has a length of 5 units and a width of 3 units, the area would be calculated as 5 x 3, which equals 15 square units. This formula is fundamental in geometry and applies to all rectangles, regardless of their specific dimensions.