Question

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Answer 1

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According to question,

Diameter of pipe =7 cm

Thus,

Radius of pipe $=r= \frac{7}{2}cm$

Let length of pipe be L.

Rate of flow of water through pipe =72 cm per sec

Thus,

In 1 sec water flowed =72 cm

Thus,

In 60 sec=72×60

In 1 hr=72×60×60

So clearly,

Volume of water flowed $=πr²H= \frac{22}{7} × \frac{49}{4}×72×60×60$

$=9979200 cm³$

$=9979.2\:Liter$

Hence, this is the answer....!