What is the formula for finding the volume of a rectangle?

The formula for finding the volume of a rectangular prism (or box) is indeed the product of its length, width, and height. This is because volume measures the three-dimensional space occupied by an object.

When you multiply length (l) by width (w), you calculate the area of one of the rectangle's faces. To find the volume, you need to account for the height (h) of the rectangle, which extends the area into three dimensions. Therefore, the formula l x w x h accurately represents the volume, incorporating all three dimensions necessary to define the space within the rectangular shape.

Other options do not represent the volume correctly; for instance, multiplying length and width gives an area, while adding length, width, and height does not yield any relevant measurement in this context. The expression l² x w suggests a different calculation that does not align with volume measurement principles, particularly because it implies squaring just one dimension and may relate to a different two-dimensional calculation rather than the three dimensions needed for volume.