A forest covering 30 km² has a uniform tree density of 200 trees per hectare. How many trees are present in the forest?
Answer
600,000 trees
The correct answer is 600,000 trees — Step 2: Multiply the area in hectares by the tree density to get total trees. 3,000 hectares × 200 trees/hectare = 600,000 trees.
Step-by-step solution
- Step 1: Convert the area from km² to hectares. 1 km² = 100 hectares, so 30 km² = 30 × 100 = 3,000 hectares.
- Step 2: Multiply the area in hectares by the tree density to get total trees. 3,000 hectares × 200 trees/hectare = 600,000 trees.
Common mistake: Treating km² as hectares directly without converting
Concept tested: Tree density calculation
Published · How this solution was prepared and checked
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