To find the amount of space a cube-shaped bird cage occupies, find the cube of the measure of one edge (which is 18 units). express the amount as a power then find the amount in cubic units.

To find the amount of space the cage occupies, you need to find the volume of the page. To do this, multiply the edge length (18 units) by itself three times. 
Volume = 18 x 18 x 18 = 5832 
So, the volume of the cage is 5832 units. 
Note: Multiplying 18 by itself three times is the same thing as "cubing" the number. 
18^3 = 5832

Hope that helps!!

I’m not sure how this works