Encyclopedia > A4

Article Content

A4

A4 is a standard paper size, defined by the international standard ISO 216.

It is 210 x 297 mm.

There is a myth that this paper format should correspond to the golden mean, which is obviously incorrect, instead you can easily see that:

<math>\frac{297}{210} \approx \sqrt{2}</math>

A4 is also the actual model number for the German V-2 rocket.

All Wikipedia text is available under the terms of the GNU Free Documentation License

Search Encyclopedia

Search over one million articles, find something about almost anything!

Featured Article

Reformed churches

... splits into multiple denominations. A 1999 survey found 746 Reformed denominations worldwide. The Reformed churches which originated in the British Isles are called ...