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  3. 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 .
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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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