Question 136

A cuboidal shaped water tank 2.1 m long and 1.5 m broad is half filled with water. If 630 litres more water is poured into that tank, the water level will rise

Solution

Length = 2.1m breadth = 1.5m (given)

We know volume of the cuboid = Length x breadth x height

$$\therefore$$ Rise in water is given by,

Length x breadth x height = 630 litres (or) $$\frac{630}{1000} m^{3}$$

2.1 x 1.5 x h = $$\frac{630}{1000} \Rightarrow h = (\frac{63}{100})(\frac{10}{21})(\frac{10}{15})$$

$$\Rightarrow$$ h = 0.2 m

Hence, option D is the correct answer.

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