From Simple English Wikipedia, the free encyclopedia 1 E9 m² is a term used to group together areas of similar size. It is used for places that are between 1,000 km² and 10,000 km² in area. The term is based from the scientific notation for 1 x 10 9 m² . 1,000 km² is equal to: 100,000 hectares approx. 386 square miles app…
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