The book

The book has 280 pages. Each side is a rectangle with sides of 15 cm and 22 cm.

a) how many leaves have the book?
b) at least how many square meters of paper should be used to produce this book?

Correct answer:

a =  140
b =  4.62 m2

Step-by-step explanation:

b=a 0.15 0.22=140 0.15 0.22=4.62 m2

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