Hey mate

Here is your answer,

volume of tank = ⅔πr²

=

[tex] \frac{2}{3} \times \frac{22}{7} \times ( \frac{3}{2} ) \times ( \frac{3}{2} )[/tex]

[tex] = \frac{99}{14} {m}^{2} [/tex]

[tex] = 1000 \times \frac{99}{14} [/tex]

[tex] = \frac{99000}{14} litres[/tex]

volume of water to be emptied =½×

volume of tank = ½×

[tex] \frac{99000}{28} [/tex]

Time taken to empty ²⁵/⁷litres = 1sec

time taken to empty 1 litres = ⁷/²⁵ sec

time taken to empty ⁹⁹⁰⁰⁰/⁸litres = ⁷/²⁵×⁹⁹⁰⁰⁰/²⁸ sc

[tex] \frac{693000}{700} sec[/tex]

[tex] \frac{990}{60} min[/tex]

=>16.5 min..

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Answer:

A small village having a population of 10,000 requires 80 litres of water per head per day.The village has got an overhead tank of measurement 40 m × 25 m × 15 m.For how many days will the water of this tank last