Square centimeter (cm²)
Definition: Square centimeter (symbol: cm²) na area of square wey each side na 1 centimeter. E equal one ten‑thousandth of one square meter.
History/origin: Like other metric derived units, square centimeter spread as metric system enter science, school, trade, and everyday measurement.
Current use: Square centimeter common for school geometry, packaging sizes, small object surfaces, and medical work like measuring wound size.