From a tap of inner  radius 0.75cm, water flows at the rate of 7m per second. Find the volume in litres of water delivered by the pipe in one hour.

Explanation

Inner radius of pipe, `r=0.75cm`

Speed of water flowing=`7m` per second

`therefore` Length of water flow in 1 hour = `7xx3600m`=`25200m`

`therefore` Volume of water in 1 hour = `pir^2h` = `22/7xx0.75^2xx25200` = `44500m^3`

Capacity of water in litres = `44550xx1000` (`1m^3=1000l)

`44550000` l

Hence, Volume of water in litres = `44550000 l `.