Question

Through cylindrical tunnel of diametre 14m. Water flows uniformly at the rate of 18km/hr. How much water will flow through it in 10 minutes​

Answer 1

Diameter of the cylindriacal tunnel=21m

∴ Radius=r=

2

21

m

Speed of water=18kmph=1800m/hr

Volume of flowing water in 60 minutes=πr

2

h

=

7

22

×

2

21

×

2

21

×18000

Volume of flowing water in 20 minutes=πr

2

h

=

7

22

×

2

21

×

2

21

×18000×

60

20

=2079000cu.cm

∴ Volume of flowing water in 20 minutes=2079000cu.cm