8 people comfortably. You can sit up to 10 if needed but less than 7 is too much room.
Somewhere around ten people.
10 people comfortably, but you can fit up to 12 people if needed. Any less than 9 people at a 72" table is too much room.
A table which is 90 inch around its outside (circumference) is 28.648 inches (to 3 dp) across (diameter).
Table linen size will depend on the drop you need. For a 5 foot diameter (60 inch) ROUND table and using a 90 inch ROUND tablecloth your drop would be 15 inches all around the table. For a 5 foot diameter (60 inch) SQUARE table and using a 85 inch SQUARE tablecloth your drop would be 12 and a half inches all around.
Ten people can sit around a 48 inch by 96 inch table.
If the table is 60 inches across, the diameter is 60 inches.
I think you will find that 60 refers to a 60 inch diameter (5 feet)
8
The surface of a circle is given by the formula d2pi/4, so for our 44 inch diameter table, that gives 484pi square inches, which is aproximately 1520.531 square inches.
You should be able to fit 4 people comfortably around a 60 inch round table. You could fit 6 people but they will be close to one another.
It is its radius which is 72/2 = 36 inches
Six people should be able to sit comfortably around a 54 inch table. Two more could be added, but the space would be rather limited.