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...nd their total surface area is about 54,000 square miles (141,000 square [[kilometre]]s).<ref>[http://www.canadasoilsands.ca/en/issues/land_use.aspx Canada's Oi

...d from 6,630 km to 120,700 km above Saturn's equator, average close to one kilometre in thickness and are composed of [[silica]] rock, [[iron oxide]], and ice p

...[United States Census Bureau]], the city has a total area of 99.0 [[square kilometre|km²]] (38.2 [[square mile|mi²]]). 80.3 km² (31.0 mi²) of it is land and

...ndian Ocean|Indian]]). At 470,979 [[square miles|mi²]] (1,219,912 [[square kilometre|km²]][https://www.cia.gov/cia/publications/factbook/rankorder/2147rank.htm

...lunar landing were performed. Lunar Module separated and descended to 10 [[kilometre|km]] from surface of Moon but did not land.

...id belt contains tens of thousands, possibly millions, of objects over one kilometre in diameter.<ref> {{cite web |year= 2002| title= New study reveals twice as ...,000 light years from the [[galactic center]] and its speed at about 220 [[kilometre per second|kilometres per second]], completing one revolution every [[1 E15

...The territory's average population density is thus 6,420 people per square kilometre;<ref>'''Note:''' According to the [http://www.nxtbook.com/nxteu/BBC/knowled

The population density, 45 per square kilometre (117/sq&nbsp;mi), makes Bhutan one of the least densely populated countries

...n the Qianmen and Tiananmen gates, lies the world's largest city square (1 kilometre long), [[Tiananmen Square]].

...the most densely populated countries in Europe, with 383 people per square kilometre (992/sq mi),<ref>http://www.statistics.gov.uk/cci/nugget.asp?id=760. URL ac