Final answer:
Three-dimensional objects are known as solids, and their volume is the physical space they occupy. The volume of a cube, for example, is the length of its edges cubed.
Step-by-step explanation:
Three-dimensional objects, such as cubes, can be measured in three dimensions: length, width, and height. These objects are also known as solids.
When teaching about three-dimensional objects, it's important to note that the volume of a solid is the measure of the physical space it occupies. For example, the volume of a cube is the length cubed because all sides of a cube are equal. The concept of volume is fundamental in understanding three-dimensional geometry and is measured in cubic units, such as cubic centimeters or liters. It's also important to distinguish three-dimensional objects from surfaces, planes, and sections, which are two-dimensional concepts. A plane is an imaginary two-dimensional surface that passes through a body, while a section is an actual two-dimensional surface of a three-dimensional structure that has been cut.