Volume is the amount of space within a three-dimensional solid. To calculate the volume of a box, multiply its length by its width by its height.
For example, a box is 3 feet long, 4 feet wide, and 5 feet high. To calculate the volume, do the following:
length = 3 feet
width  = 4 feet
height = 5 feet
volume = 3 feet × 4 feet × 5 feet = 60 cubic feet
To understand why the length, width, and height are multiplied, think of a box as a stack of three-dimensional rectangles, and each rectangle as a grid of smaller cubes. In the example above, think of the box as having 5 rectangles, with each rectangle having 3 rows, with each row having 4 cubes. The box would have a total of 60 cubes.

Exercise 1 of 6

A bedroom is 11 feet long, 12 feet wide, and 10 feet high. How many cubic feet is the volume?

Exercise 2 of 6

A swimming pool is 16 feet long, 32 feet wide, and 6 feet deep. How many cubic feet is the volume?

Exercise 3 of 6

A concert hall has 3 levels, with each level having rows A-Z, with each row having seats 1-36. How many seats are in the concert hall?

Exercise 4 of 6

A standard Rubik's Cube measures 2.25 inches on each side. A toy box measures 13.5 inches on each side. How many Rubik's Cubes can fit in the box?

Exercise 5 of 6

A toy box measures 13.5 inches on each side. A toy warehouse is 180 feet long, 270 feet wide, and 36 feet high. How many boxes can fit in the warehouse?

Exercise 6 of 6

Earth's volume is 260 billion cubic miles. Jupiter's volume is 343.2 trillion cubic miles. How many Earths can fit in Jupiter? To simplify the calculation, treat 343.2 trillion as 343,200 billion.