answer this question than I marked it as brainlist
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Answer:
Rs.4960
Step-by-step explanation:
total surface of cuboid tank ={ 2(lb + lh + hb)}m^2
= { 2(20*12 + 20*8 + 8*12)}m^2
= 992m^2
992m^2 = lb
992m^2 = l * 2.5m
lenght = 992m^2 / 2.5m = 396.8 m
cost of iron sheet (of wideness 2.5m) = @ Rs. 12.50
total cost of iron sheet (of wideness 2.5m) for making a cuboid tank = Rs.12.50 * 396.8 = Rs.4960
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