mabey about 2m (6.561 679 79 feet)
The table would have to be at east ten feet in diameter.
The ideal seat to table height for comfortable dining is typically around 18 inches for a standard dining chair. This allows for proper alignment of the body and arms while eating.
There are a few different standard sizes of round dining tables depending on how many people you're planning to seat. For sitting 4 to 6 people, a round dining table should be 44 to 54 inches in diameter. If you're look to seat more people, a table with a diameter of 54 to 72 inches seats up to 8.
It depends on the shape of the table. A square table about 6' on each side would easily seat 10, 5' would be possible but probably not comfortably. A round 8' diameter table would work. A banquet table 2.5 X 10 will seat 10 with 4 on each side and one on each end.
Typically, patio dining tables seat four, six or eight to accommodate party guests or a family dining.
If using a rectangular table you need 3 feet per person to sit comfortable or between a 66-inch dining table and a 72-inch one for seating eight diners, consider the size of your chairs.
There really is no important seat at a round table, besides the way a seat at a round table is if the chair was big and important. Hope that answers your question, I didn't understand it completely but I thought I would try! :)
Depending on the people, you need to figure about 36 inches of space per person. So a table for 24 would need to have a perimeter of 72 feet! If the table is required to be round, then a diameter of 72/pi or 23 FEET is required. Nobody has a table that's 23 feet in diameter. King Arthur's mythical Round Table may have been that size, perhaps. If it existed, it was probably toroidal (doughnut-shaped, with a hole in the center) to allow servants to put food on the table.
A 65-inch round table will comfortably seat eight people. Many tables of this size come with a leaf that can be added in to accommodate more people. Adding one leaf will allow two more people to be seated.
Check the link below for the table and seating capacities http://www.weparty.com/guides/planningguide_tableseating.pdf http://www.stuartrental.com/party-rentals/7/table-rentals FROM BUYAGAN, LA TRINIDAD ARCHITECT
The largest dining tables available are 70"x144" and can seat 12-16, depending on the size and spacing of your chairs. If you don't need quite such a big table, I recommend the the 'large dining table' by Tablemakers, which can seat up to ten - four on either side and one at each end.
36"