Question

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

Answer 1

Given: The inner radius $\left(r\right)=0.75cm$ and rate of water flow is $7m/s$ .

$\therefore$ Volume of water flown per second $=\pi r^{2}l$
$=(\frac{22}{7}\times (0.75{)}^2\times 700)c{m}^3$
$=1237.5c{m}^3$
Volume of water delivered in $1$ hour ($3600$ sec)
$=\frac{1237.5\times 3600}{1000}\text{liters}[\because 1\text{liters}=1000c{m}^3]$
$=4455$ liters

Hence, the volume of water derived per hour is $4455$ liters.