Question

The thickness of a book is 3.2 cm, measured between the insides of its covers. The highest page number in the book is 1,096. What order-of-magnitude estimate does that give for the thickness of a page of the book

Answer 1

If we only took the thickness of the book as the thickness of the pages only and excluding the thickness of the cover, we can calculate the width of each single page by taking the thickness in total and dividing it by the number of pages we have:

\[\frac{ ThicknessOfBook }{ NumberOfPages} = WidthOfPage\]you will get a number that is in the negative exponentials, in which the question wishes you to put it in "order-of-magnitude" which implies this definition:

http://en.wikipedia.org/wiki/Order_of_magnitude