CBSE Class 10 Answered
Water is flowing at 5km/hr through a pipe of radius 7cm into a rectangular tank 25cm*22cm. Find the time in which the level of water in the tank will rise by 21cm.
Asked by Sneha George | 12 Mar, 2011, 07:55: PM
Expert Answer
dear student,
the volume of water in the tank when the level in the tank is 21 cm will be
=25 x 22 x 21
let it takes t hrs.
so vol of water coming out in t hrs from the pipe=25 x 22x21
so,
in t hrs the water coming out of the pipe
= cu m...using 1km =1000 m
so
cu cm...(using 1 m =100cm)= 25 x22x21 cu cm
solve this and get the value of t in hrs, multiply it with 60 to get t in min and that answer you can multiply to get t in seconds.
Answered by | 12 Mar, 2011, 08:10: PM
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