Question

6.Water is being pumped out through a circular pipe whose internal diameter
is 8cm, if the flow of water is 80cm per sec, then how many litres of water
are being pumped out in one hour.​

Answer 1

Answer:

here

answer is 1445.76

Step-by-step explanation:

diameter=8cm

r=4cm

ATQ

volume of pipe=πr²h

=22/7*4*4*80*60*60

=1445.76

hence water flows in one hour is 1445.76cm

Answer 2

Given:

The diameter of the circular pipe is $D=8cm$

The radius of the circular pipe is $r=\frac{D}{2}=4cm$

The flow of water which is height in one second is $h=80cm/sec$

The height per one hour is $h=80\times 60\times 60$

Volume of the cylindical pipe is $V= \pi \times r^{2}\times h$

$V= \pi \times 4^{2} \times 80\times 60\times 60$

$V=1445.76\frac{cm^{3} }{hr}=1445.76liters$

Therefore, $1445.76liters$ volume of water are pumped out in one hour.