Square metre
The square metre or square meter is the unit of area in the International System of Units (SI) with symbol m⁲. It is the area of a square with sides one metre in length. Adding and subtracting SI prefixes creates multiples and submultiples; however, as the unit is exponentiated, the quantities grow exponentially by the corresponding power of 10. For example, 1 kilometre is 10⁳ times the length of 1 metre, but 1 square kilometre is (10⁳)⁲ times the area of 1 square metre, and 1 cubic kilometre is (10⁳)⁳ cubic metres.
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