A cylindrical pipe has inner diameter of 7 cm and water flows through it at the rate of 192.5 litres per minute. Find the rate of flow in km/hour.

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from s chand
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first of all you have to find out radii that equals to 3.5 cm
now convert 192.5litre into cm that equals (1000cm^3=1litre) so there are 192500cm
now in 1minute it collects 192500cm^3 of water so in 1hour it collects 192500*60(1hour=60minutes)
now we have to find out the height ( rate of flow is same as height)
so volume of cylinder =3.14*r^2*h
so, 22/7*3.5*3.5*h=192500*60
h=300000cm =3km
so rate of flow =3km per hour
3 km ans

Answers

  • Brainly User
2014-05-12T16:14:29+05:30
Solution :                                                                                                                                Given Diameter of Cylinder = 7cm                                                                               therefore radius of cylinder = diameter/2 = 7/2 = 3.5cm .                                               One Liter = 1000cm^3 ,                                                                                              therefore 192.5 litre = 192.5 *1000cm^3  = 192500 cm^3
    now in 1minute it collects 192500cm^3 of water so in 1hour it collects                                                    192500*60(1hour=60minutes)
now we have to find out the height ( rate of flow is same as height)
           so volume of cylinder =3.14*r^2*h
           so, 22/7*3.5*3.5*h=192500*60
                         h=300000cm =3km
               so rate of flow =3km per hour
2 4 2
how is rate of flow same as height?