[cypher]

I could give the measurements in sq cm but not in sq in

I think measuring cages in sq. in. is very much a US thing Drago, in Europe it's much more common to think of cages as cmxcm or sometimes sq. cm. so it makes it a little hard or a lot of conversions for us to fill out your survey.
How much your ham enjoys their cage size is a little vague too, some may enjoy it because it's got lots of space while others because it's small & safe!