Hence , 3.5 cm2 = 3.5x102mm2 = 350 mm2 and 0.75 cm2 = 0.75x102mm2 = 75 mm2 Since 1 cm2 = 102mm2 then 1 mm2 = 1102cm2 = 10–2 cm2 i.e. to change from square ...
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