UPSC CDS I 2025 Mathematics Paper

Weight of water =1 metric tonne per m3
Formula used:
Volume = Area × Rainfall depth
Weight = Volume × Density (. tonnes ∕m3)
Calculations:
⇒ Volume =10,000×0.40
⇒ Volume =4,000m3
⇒ Weight =4,000×1
⇒ Weight =4,000 metric tonnes