159575

I think the identical square to be cut from each corner has a length of 3.33 recurring cm.

Method
Every time you increase the height by 1 the length reduces by 2 each side.

Normally a cube will have a bigger volume than a cuboid that has lets say 2 cm more of height and 2 cm less than the original length.

But this time the ratio is 1-2.

So the answer for height to length is 1-2.

So 13.33333 and 6.66666
6.6666 has to be divided by two because it is minused from both sides.