The diagram show a water tank in the shape of a cuboid measuring 120 cm by 55 cm by 75 cm. the tank is filled completely with water.
b) the water from the tank flow into an empty cylinder at a uniform rate of 750 milliliters per second
calcuate the length of time in minutes for the water to be completely emptied from the tank.

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Solution

Volume of water $= 75 \times 55 \times 120 = 495000 c m^{3}$
$1 c m^{3} = 1$ mm
Time taken $= \frac{495000}{750} = 660$ seconds
$= \frac{660}{60} = 11$ minutes.

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Volume of water =75×55×120=495000cm31cm3=1mmTime taken =495000750=660 seconds=66060=11 minutes.

Volume of water $= 75 \times 55 \times 120 = 495000 c m^{3}$
$1 c m^{3} = 1$ mm
Time taken $= \frac{495000}{750} = 660$ seconds
$= \frac{660}{60} = 11$ minutes.