An eight foot table can seat up to ten people but should be sat for eight if possible. Four on each side and if you have to, one on each end.
5
7 people will fit
6
5
six
5
120cm (4') Round Table - Seats 6/7
8
10 but 1 if they are fat
6-8
He with either have 38 tables with 4 people at each table, or 19 tables with 8 at each table.