Water flows at 15 km per hour through a pipe of internal diameter 14 cm into a rectangular tank whose base measures 50 m by 44 m. By how many centimetres does the water level in the tank rise in 2 hours? Take π = 22/7.

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Accepted Answer

21. Pipe radius = 7 cm = 0.07 m, so its cross-section = (22/7) × 0.0049 = 0.0154 m². In 2 hours the water column is 30000 m long, giving 0.0154 × 30000 = 462 m³. The tank's base = 50 × 44 = 2200 m², so the rise = 462/2200 = 0.21 m = 21 cm.

Water flows at 15 km per hour through a pipe of internal diameter 14 cm into a rectangular tank whose base measures 50 m by 44 m. By how many centimetres does the water level in the tank rise in 2 hours? Take π = 22/7.

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