Question

The thickness of the books vary​

Answer 1

Explanation:

The thickness of a paperback book varies directly as the number of pages. A book 3.2 cm thick has 750 pages.

Answer 2

The thickness of 1 page is 0.12 mm . So, its simple you just have to count the number of pages and divide it by 2. And after that multiply that number by thickness of 1 page.

For example: If book is 600 pages then it should be (600/2)*(0.12) = 36mm or ~1.5 inches.

This is simply combined thickness of the pages after that you have to add the thickness of the cover which depends on case to case basis.