Based on the total number of pages in the textbook, and the total thickness, the average thickness per page is 0.0047 cm.
The average thickness per page of the textbook can be found by the formula:
= Total thickness of textbook / Number of pages
Solving gives:
= 3.86 / 820
= 0.0047 cm
In conclusion, the average thickness per page is 0.00470 cm.
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