Как сказать по 1) 2180 квадратных киллометров? 2) 1347 квадратных киллометров? 3) 1590 квадратных киллометров?

1) two thousand, one hundred eighty square kilometers
2) one thousand, three hundred forty-seven square kilometers
3) one thousand five hundred ninety square kilometers

1) Two thousand one hundren eighty square kilometers.
2) One thousand three hundred forty-seven square kilometers.
3) One thousand five hundred ninety square kilometers.