Square meters.
centimetre.
Meters
The most appropriate measure is a metre.
kilos and/or grams
it is a base 10 measurement system.
A centimetre is probably best
centimetre.
Metres.
grams
Meters
the metric system
litres
Centimetres
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The most appropriate measure is a metre.
Metres and centimetres. Or feet and inches. Then square any measurements to find the area.
A millimetre.