4dm=400cm that's what i think but I'm not so sure.
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Areas that receive over 400 cm of rainfall are rain forests. The areas that receive less than 20 cm of rainfall are desert areas.
Neither - they are the same measurement.
Convert to the same units, then the comparison can be made: The centi- prefix means one hundredth (1/100) → 400 cm = 400 × 1/100 m = 4 m 4 < 4000 → 4 m < 4000 m → 400 cm < 4000 m So 400 cm is less than 4000 m.
it is exactly the same 100cm=1metre
They're the same amount because 10cm= 1dm and 10x4=40 and 1x4=4 and 4dm= 40cm