1 mm = 1/1000 m
→ 1 mm × 2 m = 1 × 1/1000 m × 2 m = 0.002 m²
Or
1 m = 1000 mm
→ 1 mm × 2 m = 1 mm × 2 × 1000 mm = 2000 mm²
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1mm is 0.001 m
0.001 metres.
1 mm^2 = 10^-6 = 0.000001 metre^2.
1mm = 1 millimetre = 1/1,000 metre = 1/10 centimetre so first m = milli second m = metre
0.001 m = 1mm.