How many litres of water flow out of a pipe having an area of cross-section of $5\ cm^2$ in one minute, if the speed of water in the pipe is $30\ cm/sec$?

 Given:

A pipe has an area of cross-section of $5\ cm^2$.

The speed of water in the pipe is $30\ cm/sec$.

To do:

We have to find the volume of water flow out of the pipe.

Solution:

Area of the cross-section of the pipe $= 5\ cm^2$

Speed of the water flow $= 30\ cm/sec$

Time period $= 1$ minute

Therefore,

Flow of water in $1$ minute $= 30 \times 60\ cm$

$= 1800\ cm$

Volume of water $= 1800 \times 5$

$= 9000\ cm^3$

$= 9000\ ml$

$=\frac{9000}{1000}\ l$

$=9 \mathrm{litres}$

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Updated on: 10-Oct-2022

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