Answers

2016-02-24T09:18:34+05:30
First...take TSA of the tank...then multiply the rate ie 5rs/m...then divide by 2 as its width is 2...then your answer will come
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2016-02-24T09:23:33+05:30

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TSA of the tank = 2( LB + BH + LH)
                          =2(12×9 + 9×4 + 12×4)
                          = 2(108 +36 +48) = 384 m²
now , length = TSA/ wide = 384/2 = 192 m
now,  Cost = Rs 5×192 = Rs 960
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