Name: _______________________ 

  The power of variables

This is a hollow box made from a cube that is hollowed out by another cube.
If the outside edge is 20 and the thickness is 2, how big is the inside cube and where is it's bottom, front corner?
hollow box

BIG outside box

Bottom, front corner = 0,0
length=  20

SMALL inner box to cut out

Bottom, front corner = ________
length = _____

What are the equations for these 2 dimensions?

What if it is a rectangle instead of a square with variables length, width, height. What are the equations for the inner box

  1. Length
  2. Width
  3. Height