On your panel sched you can show as 180VA/rcpt or calculate the square footage covered by the 6 recpts and multiply it by 3 and divide it by 6.
Of course for feeder / service sizing it shouldn't be 180VA/rcpt
Trick question? Somewhere between 1 and infinity?How many sq ft does a standard 15 ampere duplex receptacle cover?
If you could have a 10sf dwelling, it would still have to have multiple receptacles due to code mandatory layout requirements
I'd love to see the layout that fits permanent provisions for living, sleeping, cooking and sanitation all into 10sf.