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minus-squareheartSagan5@lemmy.ziplinkfedilinkarrow-up5arrow-down1·2 hours agoWhy does A4 have an odd number of millimeters? Why not 290, flat?
minus-squarebob_lemon@feddit.orglinkfedilinkarrow-up2·9 minutes agoDefinitions and math: A series paper has a height/width ratio of √2 Each paper in the series is half the area of the last A0 has an area of exactly 1m²
minus-squaremarkko@lemmy.worldlinkfedilinkarrow-up7·2 hours agoThe answer is actually fairly interesting https://en.wikipedia.org/wiki/Paper_size#A_series Since A series sizes share the same aspect ratio, they can be scaled to other A series sizes without being distorted, and two sheets can be reduced to fit on exactly one sheet without any cutoff or margins.
Why does A4 have an odd number of millimeters? Why not 290, flat?
Definitions and math:
The answer is actually fairly interesting
https://en.wikipedia.org/wiki/Paper_size#A_series