A closed iron 12 m long , 9 m wide and 4 m deep is to be made. The cost of iron sheet used at the rate of Rs 5 per square meter sheet. who gives correct answer I will mark them as brainalist
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length of iron = 12m
breadth =9m
deep =4m
total surface area of cuboid =2(lb+bh+hl)
2(98+36+48)=364
total cost =364×5=Rs 1820
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