Measure the shape’s dimensions
Use the correct volume formula for the shape
Multiply length × width × height for a rectangular prism
Use πr²h for a cylinder
Use 1/3 × base area × height for a pyramid
Use 1/3 × πr²h for a cone
Use 4/3 × πr³ for a sphere
Make sure all measurements use the same units
Calculate the result
Write the answer in cubic units
