A farmer cultivates 10 hectares of wheat. For optimum yield the crop needs 1.5 mm of water per day. Calculate the total volume of water required for a 30‑day growing period. Assume that 1 mm of water depth over 1 hectare equals 10 000 m³.
Answer
4 500 000 m³
The correct answer is 4 500 000 m³ — State the total water volume required.
Step-by-step solution
- Compute water needed for 1 mm over 1 hectare: 10 000 m³.
- Scale to 10 hectares: 10 × 10 000 = 100 000 m³ per 1 mm.
- Multiply by daily depth 1.5 mm: 100 000 × 1.5 = 150 000 m³ per day.
- Multiply by 30 days: 150 000 × 30 = 4 500 000 m³.
- State the total water volume required.
Common mistake: Not converting area‑mm to cubic metres correctly
Concept tested: Irrigation requirement calculation
Published · How this solution was prepared and checked
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