{"book":"adl0131","page":214,"text":"مساحت\n۲۰۳\nکتاب\nو مجموعۀ رقبہ ہائی کل مثلث ہائی مذکور برابر خواهد بود بارقبۀ آن مثلث\nکہ قاعدۀ مثلث مذکور برابر باشد با مجموعۀ اضلاع کثیرالاضلاع وارتفاع\nمثلث مذکور مساوی باشد بآن عمود کہ از مرکز دائرہ بالائی کدام\nضلع کثیرالاضلاع کشیده شود پس از بیان مذکور بالا ثبوت دعوای\nمذکور عیان است.\nاندرون دائره کہ کثیرالاضلاع منتظم کہ اضلاع بسیار داشته باشد\nساختہ شود سہ قواعد بیان کردہ شدہ اند. حال بجهتہ توضیح\nقواعد مذکور حال شکل منتظم را کہ ۱۲ اضلاع داشتہ باشد در ذیل بیان میکنیم\nملاحظہ فرمائید دفعۀ (۵۹۹ و ۱۵۷) فرض کنید که نصف قطر دائره یک\nفٹ است پس عمود کہ از مرکز کہ برکدام یک ضلع کشیده شود\nطول عمود مذکور تقریباً ۹۶۶ فٹ خواهد بود پس مجموعۀ اضلاع کثیرالاضلا\n۱۲×۵۱۷۶ فٹ یعنی تقریباً ۶/۲۱۱ فٹ مطلوب است.\nمحیط دائرہ تقریباً ۶/۲۸۳۲ فٹ مطلوب است و رقبۀ کثیرالاضلاع","chars":753,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00214.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/214","canvas":"https://afghanpress.org/iiif/adl0131/canvas/214","source":"https://afghanistandl.nyu.edu/books/adl0131/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0131_download.pdf","rights":{"image":{"statement":"Public domain. NYU states: \"All works presented on this website are, unless otherwise indicated, in the public domain. The images available on this website may be freely reproduced, distributed and transmitted by anyone for any purpose, commercial or non-commercial.\"","uri":"http://rightsstatements.org/vocab/NoC-US/1.0/","holder":"New York University Libraries","source":"https://afghanistandl.nyu.edu/about.html","delivery":"Images are served from a copy mirrored by this project, not from NYU's servers, under the reproduction terms above.","endorsement":"This is an independent project. It is not affiliated with, endorsed by, or reviewed by New York University."},"text":{"statement":"Machine-generated transcription, dedicated to the public domain under CC0 1.0. No warranty of accuracy: see the provenance block on every page.","uri":"https://creativecommons.org/publicdomain/zero/1.0/","holder":"Steps Ventures"}},"provenance":{"text_produced_by":"gemini-3.1-pro-preview","thinking_level":"low","read_completed":"2026-08-09","per_page_confidence":null,"per_page_confidence_note":"Not recorded during the corpus run. No calibrated per-page score exists, and none is estimated here.","human_reviewed":false,"accuracy_context":"Roughly two thirds of characters agree with a modern printed edition of the same text. Much of the disagreement is editorial, not misreading. Treat the transcription as a finding aid and read the page image before quoting.","primary_source":"The page image. The text is an index into it."}}