Question

What is the maximum number of cubes with a side length of 2 inches that can fit in a box that has a length of 6, a width of 2, and a height of 4?

6 cubes?
Damon
6*2 = 12
Anonymous
What is the maximum number of cubes with a side of 3 inches that can fit in a box the length is 21,height is 6, and the width is 3