Metric Units for Measurement of Area

Units of area are squares, so each conversion factor is a length factor squared: \(1\text{ m}^2 = 100 \times 100 = 10\,000\text{ cm}^2\). This NSW Year 8 maths subtopic (NESA outcome MA4‑ARE‑C‑01) links \(\text{mm}^2\), \(\text{cm}^2\), \(\text{m}^2\), hectares and \(\text{km}^2\), where a hectare is a square 100 m by 100 m.

You will convert in both directions, take two steps when there is no single factor, and put areas written in different units in order. You will also find the area of a phone screen in \(\text{cm}^2\), count the pavers needed for a courtyard, value a paddock at a price per hectare and work out the fertiliser for a rugby league field. It is part of Year 8 Area and Perimeter.