The amusing thing about all the 'flat world' comments is that the idea of belief in a flat world was born in 1833!
there is not a shred of evidence that any of the ancients ever held such a belief. (which is logical, since anyone that has ever stood on a mountain, or looked over the ocean can plainly see that we live on a sphere)
there is not a shred of evidence that any of the ancients ever held such a belief”
But there is plenty of evidence that they believed that the world is a sphere, and they had a good approximation of the circumference.