Measure the length, width, and height of the object
Use the volume formula for the shape
Multiply length × width × height for a rectangular prism
Use π × radius² × height for a cylinder
Use 4/3 × π × radius³ for a sphere
Use base area × height for a prism
Use 1/3 × base area × height for a pyramid or cone
Make sure all measurements use the same units
Write the final answer in cubic units