The measures of a text book are 22 cm x 11 cm x 3 cm. It is to be covered with a brown paper. If each book requires 164 cm² of more paper for folding, how much paper is required to wrap 85 such text books?
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Answer: I think its 60,690 cm2
Step-by-step explanation: For covering one book, the surface area will be lb +lb + hl, i.e. l(2b +h). So 22 * (11*2 + 3) = 22* 25 = 550 cm2. For the extra folding, 550 + 164 = 714 cm2 paper is needed for 1 book. For 85 such books, total area * no. of books = 714 * 85 = 60690 cm2.
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