wikiHow Calculating Volume of a Rectangular Prism Calculator The volume of a rectangular prism is the amount of space occupied by it, and it can be calculated using the formula: Volume = length x width x height where: length = the length of the rectangular prism width = the width of the rectangular prism height = the height of the rectangular prism To calculate the volume of a rectangular prism, follow these steps: 1. Measure the length, width, and height of the rectangular prism in the same unit of measurement (e.g., inches, centimeters, meters). 2. Multiply the length by the width. 3. Multiply the result by the height. 4. The resulting number will be the volume of the rectangular prism in cubic units (e.g., cubic inches, cubic centimeters, cubic meters). Example: Suppose you have a rectangular prism with a length of 6 inches, a width of 4 inches, and a height of 2 inches. What is the volume of the rectangular prism? 1. Measure the length, width, and height of the rectangular prism: length = 6 inches, width = 4 inches, height = 2 inches. 2. Multiply the length by the width: 6 inches x 4 inches = 24 square inches. 3. Multiply the result by the height: 24 square inches x 2 inches = 48 cubic inches. Therefore, the volume of the rectangular prism is 48 cubic inches. Page