If i had a garden that is 8.5 meters long, and 4.5 meters wide, and i had 10 plants. How far away should i space each plant from each other

If i had a garden that is 8.5 meters long, and 4.5 meters wide, and i had 10 plants. How far away should i space each plant from each other if i want them to all be the same distance away from each other?