Question

The length breadth and height of cuboidal water tank is 7m 6m and 2m respectively if 4200 litre of water is pumped out from the tank find the fall in water level in the tank

Answer 1

Height of the water tank = 6 m (Given)

Convert litres to m

1 litre = 0.001 m³

8400 litres = 8.4 m³

Find the height of the water that was pumped out:

Volume = Length x Breadth x height

8.4 = 7 x 6 x height

8.4 = 42 x height

height = 8.4 ÷ 42 = 0.2 m

Step-by-step explanation:

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Answer 2

1000 Litre is 1 cubic meter
We have 7*6*2 = 84 cubic meter space
i.e., 84000 litre water

4200 is 5% of 84000
So fall in level is 5% of 2 meter height as length and breadth remain constant

So 200cm * 0.05 = 10 cm is the drop in height

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