Water flow

How much water flow in pipe with a diameter of 16 cm in 1 hour if the water velocity is 2.5 m/s?

Correct result:

V =  180956 l

Solution:

D=16/10=85=1.6 dm r=D/2=1.6/2=45=0.8 dm S=π⋅ r2=3.1416⋅ 0.82≐2.0106 dm2 v=2.5⋅ 10=25 dm/s t=3600 s s=v⋅ t=25⋅ 3600=90000 dm V=s⋅ S=90000⋅ 2.0106=180956 l

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