Seating Software Seating Chart Software?

Seating chart software? - seating software

I'm trying to understand if I have 60 round tables or tables of 8 square meters of my recording on an area of 20 meters 40 meters. Is there any software which is a diagram for me? Or maybe can make someone 'having a good geometry the figure this is from? For Table 60 "round, you probably have an area of 9 feet x 9 feet of available space for chairs and table, 8 foot Banquet Facilities, you need you're probably a" 7 "x 12 meters to make room for chairs. (please correct me if I'm wrong on the space lying)