Water flows through a cylindrical pipe of internal diameter 7cm at 5 metres per second. Calculate the time, in minutes, the pipe would take to fill an empty rectangular tank $4 m \times 3 m \times 2.31 m .$

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Solution

The correct option is B 24
Cylindrical pipe has internal diameter $= 7 c m$
$R a d i u s = 3.5 c m = 0.035 m$ .

$t = t i m e R e q u i r e d = \frac{V o l u m e T o B e F i l l e d}{V o l u m e F i l l e d I n U n i t T i m e}$

$t = (4 \times 3 \times 2.31) / (π \times (0.035)^{2} \times 5)$ seconds
$t = 1440$ seconds

$t = 24 m i n$

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Water flows through a cylindrical pipe of internal diameter 7cm at 5 metres per second. Calculate the time, in minutes, the pipe would take to fill an empty rectangular tank 4 m×3 m×2.31 m.

The correct option is B 24Cylindrical pipe has internal diameter =7cm Radius=3.5cm=0.035m.t=timeRequired=VolumeToBeFilledVolumeFilledInUnitTimet=(4×3×2.31)/(π×(0.035)2×5) secondst=1440 secondst=24min

Water flows through a cylindrical pipe of internal diameter 7cm at 5 metres per second. Calculate the time, in minutes, the pipe would take to fill an empty rectangular tank $4 m \times 3 m \times 2.31 m .$