The formula for calculating the volume of a rectangular object is expressed as Volume = length × width × height. This means that to find out how much space an object occupies, you multiply its three dimensions: the length, the width, and the height. Each dimension is measured in the same unit, such as centimeters or inches. For example, if a box has a length of 5 cm, a width of 3 cm, and a height of 2 cm, you would calculate its volume by multiplying these numbers together. In this case, the volume would be 5 cm × 3 cm × 2 cm = 30 cm³, indicating that the box can hold 30 cubic centimeters of space.