A forest area of 90 km² has a tree density of 70 trees per hectare. How many trees are there in this forest?

Step-by-step solution

1. Convert 90 km² to hectares: $90\times 100=9000$ ha.
2. Multiply by the density: $9000;\text{ha}\times 70$ trees/ha.
3. Calculate the product: $630,000$ trees.

Concept tested: Area conversion and density calculation

Published 10 October 2026 · How this solution was prepared and checked