There has to be a better way to say this than kurmitre.
Although it does somewhat work to describe the dimension of the unit at a right angle to itself, generalizing this idea would lead to words like kursnidu, and the concept of a second at a right angle to another second doesn't work so nicely.
Plus, even if it's justifiable, kurmitre certainly looks malglico.
How about {reltefmitre}?
Maybe pitmitre for square meter, calmitre for cubic meter.
The most standard answer we have so far is tretre.
Even ctotrectotre was suggested for hectare.