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A cylindrical pipe has inner diameter of 7 cm and water flows through it at 192.5 litres per minute.ind the rate of flow in km/hr

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A cylindrical pipe has inner diameter of 7 cm and water flows through it at 192.5 litres per minute.ind the rate of flow in km/hr
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Velocity*Cross sectional area=Volume flow rate.
`V*pir^2=192.5`
`V*22/7*7/2*7/2=192.5/60`
V=0.3 km/h.
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