Water is being pumped out through a
circular pipe whose internal diameter is 8
cm. If the flow of water is 80 cm per s, then
how many litres of water are being pumped
out in one hour?
Answers
Answered by
0
Step-by-step explanation:
we have,
Radius of the circular pipe
2
7
cm
Clearly, water column forms a cylinder of radius
2
7
cm
It is given that the water flows out at the rate of 72cm/sec
Length of the water column flowing out in one second=72cm
Volume of the cylinder of radius
2
7
cm and length 72cm
⇒ π(
2
7
)
2
×72cm
3
=
7
22
×
2
7
×
2
7
cm
3
=2772cm
3
Volume of water flowing out in one hour
⇒ (2772×3600)cm
3
=9979200cm
3
=
1000
9979200
litres=9979.2litres
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