question of mensuration send fast pld
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Step-by-step explanation:
Volume of pool = 70*44*3 m
= 9240 m^3
Diameter of pipe = 35 cm = 0.35 m
Speed of water in pipe = 6 m per second
Volume of water filled by pipe in 1 second
= π r^2h
= π 0.35*0.35*6
= π 0.735 m^3 = 2.31 m^3
Time taken to fill the pool = 9240/2.31
= 4000 seconds
= 4000/60 minites
= 66.667 minutes
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