Question

The area of cross-section of a pipe is $10.4c{m}^2$ and water is running through it at the rate of $54$ km/h. if the pipe is always $60$% full, find the volume of water, in litres, that flows through the pipe in $5$ minutes$.$

Answer 1

$areaofcross-sectionofapipe=10.4c{m}^2=10.4\ast {10}^{-4}{m}^2$
speed of water=54km/h=54000/60 m/min=900 m/min
as pipe is 60% full, So volume of water in 5 min=
$V=10.4\ast 900\ast 60\ast 5/10000\ast 100V=2.808m^{3}V=2.808m^3=2.808\ast 1000=2808litre$