Help? How wide and long will this minecraft house have to be? I have 256 blocks and needs to be 4 blocks high and as square as possible?

Like I said in the question, would like it to be as square as possible. I have 256 blocks, And I would like it to be four blocks high.

Thanks in advance

Ash2014-07-06T20:38:25Z

Let the number of blocks of the square base be = x
Then the total blocks for the base = x²
For 4 block high we need = 4x²

We have 4x² = 256
x²=64
x=8

So you need 8 x 8 block base

Anonymous2014-07-06T20:33:08Z

8x8x4 = 256 so make it 8 wide and 8 long