Editing A4Paper
You are currently not logged in.
To change this, fill in the following fields:
Username
Password
Who can read this page?
The World
Members
Council
Admin
You have been granted an edit lock on this page
until Thu Apr 25 05:21:34 2024.
Press
to finish editing.
Who can edit this page?
World editing disabled
Members
Council
Admin
[[[>40 IMG:A4paper.png ]]] All A grade sheets of paper are rectangles whose sides are in the ratio $\sqrt{2}:1.$ The area of an A0 sheet is 1 square metre. Folding an 'Ax' sheet of paper in half produces an 'A(x+1)' sheet. Therefore, the area of an 'An' sheet of paper is $(\frac{1}{2})^n$ square metres. The actual dimensions of A4 are 297 mm x 210 mm. We can compute the dimensions as $\frac{250\sqrt2}{sqrt(\sqrt2)}$ mm and $\frac{250}{sqrt(\sqrt2)}$ mm that's 297.3017 ... mm and 210.2241 ... mm. Very, very close. The ratio of sides is an irrational number, just as for a golden rectangle.