As previously stated, the volume of this box-shaped space can be calculated by multiplying its length, width, and height together (length x width x height). The volume of the object is the answer to this multiplication problem. Measure the height of the container from one water mark to the next, not the whole container’s height. The volume of an object is the sum of three-dimensional space that the object or shape takes up. The volume of an object is a representation of how much space it takes up. Different shapes have different methods for determining volume. In a cube, for example, the volume is calculated by multiplying the three side lengths together.