Which measurement is used to determine the amount of space inside a three-dimensional object?

The measurement used to determine the amount of space inside a three-dimensional object is volume. Volume quantifies the capacity of an object, reflecting how much three-dimensional space it occupies. This is particularly important for a variety of real-world applications, such as calculating how much liquid a container can hold or determining the amount of material needed to fill a hollow object.

In contrast, area measures the size of a two-dimensional surface, while perimeter refers to the distance around a shape. Surface area, on the other hand, measures the total area that the surface of an object occupies. Thus, these measurements serve different purposes and are not applicable when specifically looking to understand the internal capacity of a three-dimensional object.