上海面积为六千三百多平方公里（两种表达） Shanghai has Shanghai is 这个城

上海面积为六千三百多平方公里
Shanghai has an area of more than 6300 square kilometres.
Shanghai is more than 6300 square kilometres large.
这个城市有600多万人口（两种表达）
This city has a population of more than 6 million.
There are more than 6 million people in this city.