Concept · 3 steps · NESA MA4-ARE-C-01

Choosing and Converting Units of Area

Why a square metre is 10 000 square centimetres, not 100 — and how to swap between mm², cm², m² and hectares without getting stung by the squared factor.

1Where it comes fromTile a metre square with centimetre squares — 100 across and 100 down. 2How to do itThe conversion factors, plus picking a sensible unit. Generator + check. 3Where it gets trickyThe squared-factor trap: ×100, not ×10. See the gap explode.

← This concept rests on

Area of a Rectangle
Units of Length

→ It unlocks

Area of Composite Figures
Surface Area