A water tank is 55 metres long, 25 metres wide and 8 metres deep.It is half filled. How many litres of water does it contain now ?

85,00,000 litres

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45,00,000 litres

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75,00,000 litres

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55,00,000 litres

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Solution

The correct option is D
55,00,000 litres

Volume of water = Volume of tank

Given: Length = 55 m, Width= 25 m

Depth = 8 m

Half filled $\Rightarrow h e i g h t = \frac{d e p t h}{2}$

$\Rightarrow h e i g h t = \frac{8}{2}$

$\Rightarrow h e i g h t = 4 m$

Volume $V = l e n g t h \times w i d t h \times h e i g h t$

Volume $V = 55 \times 25 \times 4 = 5500 c u b i c m e t r e$

1 cubic metre = 1000 litres

5500 cubic metres= $5500 \times 1000 l i t r e s = 55, 00, 000 l i t r e s$

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