A closed box whose length is twice its width is to have a surface area of 192 square inches. Find the dimension of the box when the volume is maximum O a. 2 by 4 by 44/3 inches Ob.1 by 2 by 94/3 inches O.4 by 8 by 16/3 inches O d.3 by 9 by 23/4 inches

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