Mensurationmedium · Past Paper
A rectangular reservoir is 6m long and 3m wide. At what speed per hour must water flow into it through a square pipe of 20cm side so that the water level rises by 2m in 5 hours?
A180 m/hr
B360 m/hr
C1800 m/hr
D500 m/hr
✓ Correct Answer: A — 180 m/hr
Volume needed = 6*3*2 = 36 m³. Pipe area = 0.04 m². Speed * 5 * 0.04 = 36. Speed = 36 / 0.2 = 180 m/hr.
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