the earth is round according to the quran thank you very much. it is only flat when we are walking upon it. we as humans do not see it as round when looking at it on our level without airplanes etc. just because you read something does not mean you understand it.
go back and check the tafsir and that would be in a book not the internet.
This is a great tactic of evangical christians sites such as answering-islam. they take bits and pieces of islam then stop without adding the full details of it, then add lies on top of it to DEMONIZE islam. But they will never succeed. They will however get a lot of folks to believe them, but that is written by God.