How big is a 2000 sq ft box?

Answer 1

"2000 sq ft box" is an extremely vague term. Square feet are units of area, not volume. Maybe you mean "box" in the sense "draw a box around it", i.e. a rectangle. In that case, there are a number of ways such a box could be drawn: it could be 1.2 inches wide and 20,000 feet long, or a foot wide and 2000 feet long, or 10 feet wide and 200 feet long, or any number of other combinations.

If it's a square, then it would be slightly less than 44 feet 8 2/3 inches on a side.

If you meant 3-D box and cubic feet, then again, there are an infinite number of possible combinations, but if it's a cube, then it would be just over 12 feet 7 3/16th inches on a side.