My school prohibites this. I am not allowed to destroy the grass in my courtyard by walking on it. Anyway I used mathematic to find the answer. [Our courtyard is about 30x40 meters that is 1200 meters and 120.000 CM. 120.000:(10x10) ] And the result is that I need 1200 cardboard squares to cover it. A lot.
Ce am pus in parateza patrata e explicatia la calcul. O poti include sau nu. Cum vrei.
