One leaf of a printed book has how many pages?
Answer2
Each leaf has two sides, and each side counts as a page.
Arts · Facts & stats
Page facts & stats
7 fact-checked facts about pages, paper and books, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Most modern paper is made mainly from what?
AnswerWood pulp
Most paper is made from cellulose fibers in wood pulp.
Going deeper
Which plant did ancient Egyptians use to make a writing surface?
AnswerPapyrus
Papyrus sheets were made from strips of the papyrus reed pressed together.
In modern use, a ream of paper usually contains how many sheets?
Answer500
A standard modern ream is 500 sheets.
What are the dimensions of an A4 sheet of paper?
Answer210 × 297 mm
A4 measures 210 by 297 millimeters; 216 by 279 mm is US Letter.
Expert level
What is the area of a sheet of A0 paper?
Answer1 square meter
A0 is defined as one square meter; each smaller size halves the area.
Who is traditionally credited with inventing papermaking in China around 105 AD?
AnswerCai Lun
Court official Cai Lun is traditionally credited with developing papermaking around 105 AD.
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