In a 7 by 3 by 7 radius but they DON'T spawn on air, only "blocks" (open fence gates, water, buttons, actual blocks, ect). I suggest just putting the spawners inside the floor of a funnel as they won't spawn below it unless there is blocks below it, which is easy to removeHi there, iv watched so many youtube videos but could not get any information, in what radius do mobs spawn? And how tall should i build my mob grinder?
I play on Win10 Minecaft bedrock
Best wishes MiauMiez