There are 10mm in 1cm. Therefore there are 102mm2 in 1cm2 which equals 100 square millimetres.
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1 cm squared is 10mm by 10mm so 1cm squared equals 100mm squared
10 mm
There are 10mm in a cm. However, when talking about the area, the units are squared, and so too is the difference between cm and mm. 10x10 is 100, which is the conversion factor. 1cm^2 is 100mm^2.
There are 10mm in 1cm so 28cm = 280mm.
there are 10mm in 1cm.