From a tap of inner radius 0.75 cm, water flows at the rate of 7 m per second. Find the volume in litres of water delivered by the pipe in one hour.
Given,
inner radius of tap = 0.75 cm
Rate of water flow through it = 7 m/s = 700 cm/s
so,
volume of water per second derived from tap = 
Volume of water derived in 1 hour (3600 sec) = 
= 4455 litre
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