Mensurationhard · Past Paper
A river 3m deep and 40m wide is flowing at the rate of 2 km/hr. How much water falls into the sea in a minute?
A4000 cubic m
B8000 cubic m
C2000 cubic m
D6000 cubic m
✓ Correct Answer: A — 4000 cubic m
Speed = 2000 m / 60 min. Volume per min = depth * width * (speed per min) = 3 * 40 * (2000/60) = 4000 cubic m.
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