The expression "g^3" represents the mathematical operation of raising the variable g to the power of 3. This means that g is multiplied by itself two additional times, resulting in the product g × g × g. In algebra, this operation is commonly used to express cubic relationships and can be applied in various fields, including physics and engineering. In geometry, the concept of cubing a number relates to calculating the volume of a cube. If the length of one side of a cube is represented by g, then the volume of the cube can be calculated using the formula g^3. This illustrates how the power of 3 is significant in understanding three-dimensional space.