10x10 block

I’ve got a question about the 10x10 block. It seems to me that a figure
described as 10x10 would be 2 dimentional. Seeing as it’s not too hard riding
over a 10x10 peice of paper, I guess this is the wrong idea. Is it just a curb
that is 10cm high and you have a 10 cm width marked out on the curb in order
to scale it?

                                                    - John Larkin