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The mass of the oceans is approximately 1.35 × 10 18 metric tons or about 1/4400 of Earth's total mass. The oceans cover an area of 361.8 million km 2 (139.7 million sq mi) with a mean depth of 3,682 m (12,080 ft), resulting in an estimated volume of 1.332 billion km 3 (320 million cu mi).
Square miles should not be confused with miles square, a square region with each side having a length of the value given. For example, a region which is 20 miles square (20 mi × 20 mi) has an area of 400 sq mi; a rectangle of measuring 10 mi × 40 mi also has an area of 400 sq mi, but is not 20 miles square.
The mainland of Singapore measures 50 kilometres (31 mi) from east to west and 27 kilometres (17 mi) from north to south with 193 kilometres (120 mi) of coastline. These figures are based on 2.515 metres (8 ft 3.0 in) High Water Mark cadastral survey boundaries. [2] It has an exclusive economic zone of 1,067 km 2 (412 sq mi).
Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of 14,200,000 km 2 (5,500,000 sq mi). Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of 1.9 km (1.2 mi).
The tsunami reportedly rolled over the tops of the coconut trees up to 60 feet (18 m) high, and it reached inland a distance of a quarter of a mile (400 meters) in some places. [28] On 29 November 1975, a 37-mile-wide (60 km) section of the Hilina Slump dropped 11.5 feet (3.5 m) and slid 26 feet (7.9 m) toward the ocean.
The State of Qatar occupies 11,571 km 2 (4,468 sq mi) on a peninsula that extends approximately to 160 km (99 mi) north into the Persian Gulf from the Arabian Peninsula. [1] Varying in width between 55 and 90 km (34 and 56 mi), the land is mainly flat (the highest point is 103 m (338 ft)) and rocky. [1] Notable features include coastal salt ...
According to the United States Census Bureau, the city has a geographical area of 68.3 square miles (176.9 km 2), 61.4 square miles (159.0 km 2) of which is land, and the remaining 6.9 square miles (17.9 km 2) (10.16%) of which is water. The Anacostia River and the smaller Rock Creek flow into the Potomac River in Washington.
The square kilometre (square kilometer in American spelling; symbol: km2) is a multiple of the square metre, the SI unit of area or surface area. 1 km 2 is equal to: 1,000,000 square metres (m 2) 100 hectares (ha) It is also approximately equal to: 0.3861 square miles [ 2 ] 247.1 acres [ 3 ] Conversely: