Mensurationhard · Past Paper
Water in a canal, 6 m wide and 1.5 m deep, is flowing with a speed of 10 km/h. How much area will it irrigate in 30 minutes, if 8 cm of standing water is needed?
A562500 m²
B450000 m²
C300000 m²
D600000 m²
✓ Correct Answer: A — 562500 m²
Vol in 30 min = 6 * 1.5 * 5000 = 45000 m³. Area = Vol / height = 45000 / 0.08 = 562500 m².
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