a box made of sheet metal coats ruppes 2820 at the rate of $30 per square meter if the box is 5 meter long and 4 meter wide find its height
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Step-by-step explanation:
surface area of box = 2820/30 = 94 sq m
surface area = 2(lb + lh + bh) = 94
(20 + 5h + 4h) = 94/2= 47
9h = 47 - 20 = 27
h = 27/9 = 3 m
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