A 20‑hectare deciduous forest absorbs 1,200 tonnes of CO₂ per year. What is the amount of CO₂ absorbed per square metre annually?

Step-by-step solution

1. Convert 20 ha to square metres: $20\times 10,000=200,000m^2$.
2. Convert 1,200 tonnes to kilograms: $1,200\times 1,000=1,200,000kg$.
3. Divide total CO₂ by area: $\frac{1,200,000}{200,000}=6$ kg/m².

Concept tested: Carbon sequestration per unit area

Published 7 October 2026 · How this solution was prepared and checked