Megan has a large packing box shaped as a cube with a volume of 216 cubic feet.

(A) What is the side length for the cubical box?

(B) Megan would like to design a box that is a rectangular prism, but not a cube. What are a possible length,width,and height that she could use if she wants this box to have the same volume as the cube? Explain how you found the dimensions.