Located in South America, and thus, in the southern hemisphere, Argentina has an area of almost 3.8 million square kilometers, 2.8 on the continent - approximately 54 % are plains (grasslands and savannahs), 23 %, plateaus, and the other 23 %, mountains - and the remainder in the Antarctic. It is 3,800 Km. long and is located between latitude 22∫ and 55∫. Its border with Uruguay, Brazil, Paraguay, Bolivia and Chile has a perimeter of 9,376 Km, while the territory bordered by the Atlantic Ocean is 4,725 Km long.