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The length of a cold storage is double its breadth . its height is 3 metres . The area of its four walls ( including doors ) is 108 m^2 . Find its volume .

Answers (1)

D Deependra Verma

Solution : Let length , breadth and height of the cold storage be $l$ metre , $b$ metre and $h$ metre respectively .

Then , $l=2b (given)$ and $h=3$ metre .

Now , Area of four walls = 108 $m^3$

$Rightarrow$ $2(l+b)h=108$

$Rightarrow$ $2(2b+b) imes 3= 108Rightarrow 18b=108Rightarrow b=6$ $metre$

$herefore$ $l=2bRightarrow l=12 metres$

Hence , Volume of the cold storage $=$ $(lbh)m^3=(12 imes 6 imes 3)m^3= 216m^3$

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