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  2. File:Mathematics simplified.. (IA mathematicssimpl00fish).pdf

    en.wikipedia.org/wiki/File:Mathematics...

    Original file (745 × 1,331 pixels, file size: 7.65 MB, MIME type: application/pdf, 140 pages) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

  3. Grammage - Wikipedia

    en.wikipedia.org/wiki/Grammage

    However, a sheet of common copy paper that has a basis weight of 20 pounds (9.1 kg) does not have the same mass as the same size sheet of coarse paper (newsprint). In the former case, the standard ream is 500 sheets of 17-by-22-inch (432 by 559 mm) paper, and in the latter, 500 sheets of 24-by-36-inch (610 by 914 mm) paper.

  4. Printing and writing paper - Wikipedia

    en.wikipedia.org/wiki/Printing_and_writing_paper

    [citation needed] A4 ("metric") paper is easier to obtain in the US than US letter can be had elsewhere. [citation needed]. The ISO 216:2007 is the current international standard for paper sizes, including writing papers and some types of printing papers. This standard describes the paper sizes under what the ISO calls the A, B, and C series ...

  5. Book size - Wikipedia

    en.wikipedia.org/wiki/Book_size

    An octavo page, oriented a quarter turn from the full sheet, would have height 240 mm (9 + 1 ⁄ 2 in)— 1 ⁄ 2 in × 19 —and width 160 mm (6 + 1 ⁄ 4 in)— 1 ⁄ 4 in × 25. The sizes of books of the same format will differ in proportion to the full sheets used to print them.

  6. Mathematics of paper folding - Wikipedia

    en.wikipedia.org/wiki/Mathematics_of_paper_folding

    Print/export Download as PDF; ... The discipline of origami or paper folding has received a considerable amount of mathematical study. ... 1 ⁄ 2: 1 ⁄ 2: 49: ...

  7. Area density - Wikipedia

    en.wikipedia.org/wiki/Area_density

    In the paper and fabric industries, it is called grammage and is expressed in grams per square meter (g/m 2); for paper in particular, it may be expressed as pounds per ream of standard sizes ("basis ream"). A related area number density can be defined by replacing mass by number of particles or other countable quantity, with resulting units of ...

  8. Paper size - Wikipedia

    en.wikipedia.org/wiki/Paper_size

    Paper size standards govern the size of sheets of paper used as writing paper, stationery, cards, and for some printed documents. The ISO 216 standard, which includes the commonly used A4 size, is the international standard for paper size.

  9. ISO 216 - Wikipedia

    en.wikipedia.org/wiki/ISO_216

    Successive paper sizes in the series (A1, A2, A3, etc.) are defined by halving the area of the preceding paper size and rounding down, so that the long side of A(n + 1) is the same length as the short side of An. Hence, each next size is nearly exactly half the area of the prior size. So, an A1 page can fit two A2 pages inside the same area.