Complex sentence: Sugar Land metropolitan statistical area has a total area of 10,062 square miles (26,060 km²), is land area, while is water area, slightly smaller than Massachusetts and slightly larger than New Jersey.
Split into simpler sentences: Sugar Land metropolitan statistical area has a total area of 10,062 square miles (26,060 km²), of which is land and is water. The region is slightly smaller than the state of Massachusetts and slightly larger than New Jersey.