Water is flowing at the rate of 15 km

Asked by admin @ 23/08/2021 in Math viewed by 294 People

water is flowing at the rate of 15 km per hour through a pipe of diameter 14 cm into a rectangular tank which is 50 m long and 44 m wide, find the time in which the level of water in the tank will rise by 21 cm.

Answered by admin @ 23/08/2021

In cylinder,
r=7cm=0.7m
l=15km
=15000m

In tank,
l=50m
b=44m
h=0.21m

Vol.of water in tank=lbh
=50*44*0.21
=462m³

Height of cylindrical pipe=Vol. / πr²
=462/(0.07)²(22/7)
=462/0.0154
=30000m

Time = 30000/15000
= 2 hours

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