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Square meter. 8bitbola Definition: The square meter, or square metre (symbol: m 2), is an SI (International System of Units) derived unit of area. obat kalek It is defined as the area of a square with side measures of one meter, where the meter is currently defined as the distance traveled by light in 1/299 792 458 of a second when expressed in the unit m·s-1, where the second is defined in terms of the cesium