## Rectangular Parallelepiped

A closed box composed of 3 pairs of rectangular faces placed opposite each other and joined at Right Angles to each other. This Parallelepiped therefore corresponds to a rectangular box.'' If the lengths of the sides are denoted , , and , then the Volume is

 (1)

the total Surface Area is
 (2)

and the length of the space'' Diagonal is
 (3)

If , then the rectangular parallelepiped is a Cube.