The Mars cereal company has 2 different boxes for Mars cereal. The large box is 8 inches wide, 11 inches high & 3 inches deep. The small box is 6 inches wide, 10 inches high & 2.5 inches deep. how much more cardboard is needed to make the large box than the small box? the answer is 190 sqaured inches right??????

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Yes, your answer is absolutely right. I'd also solved it. Please see the pic.
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