How to Calculate Volume of a Rectangular Prism

••• da-kuk/E+/GettyImages

How to Calculate Volume of a Rectangular Prism. A rectangular prism or solid is three-dimensional, and its volume is easy to calculate. You measure the volume of a rectangular solid in cubic units of measurement. Figure out the volume of a rectangular prism by following these few short and simple steps.

    Find the length of the prism.

    Find the width of the prism.

    Find the height of the prism.

    Multiply the 3 dimensions together. It does not matter the order in which you multiply the numbers.

    Write your answer in the proper cubic unit of measurement.

    Things You'll Need

    • Rectangular prism
    • Calculator (if needed)

    Tips

    • Make sure you use the same unit of measurement for each dimension. If you have the volume of the prism and need to find a missing dimension, work the problem backwards. Take the volume and divide it by each dimension given until you have the missing dimension. Break down complicated shapes into smaller parts. Determine the volume of smaller parts, and then combine them (by adding) into the volume of the entire shape.

Related Articles

How to Convert Centimeters to Cubic Feet
How to Calculate Cubic Space
How to Calculate the Square Feet of a Circle
How to Find the Height of a Rectangular Pyramid
How to Measure the Length of the Diagonal Line of a...
How to Calculate Area From Width & Length
How to Find a Z Score
How to Calculate the Volume of Water to Fill a Rectangular...
How to Determine Square Feet Area
How to Calculate the Area of a Curved Surface
How to Calculate Volume of a Circular Cylinder
How to Find the Area of Squares
How to Calculate the Diameter of a Circle From a Linear...
How to Solve a Hexagon
How to Find the Volume of a Sphere in Terms of Pi
How to Convert Centimeters to Meters
How to Calculate Perimeter and Area Ratio
How to Convert Centimeters to Centimeters Squared
How to Calculate Area of a Triangle
How to Do Fractions With a TI 83 Calculator
How to Calculate Volume in Cubic Centimeters