{"book":"adl0131","page":218,"text":"کتاب ۲۰۷ مساحت\n\nپس رقبهٔ نصف قطرهای دائر ها را که در ذیل اند در پیمانهٔ مربع فت\nدایره‌ها را که نصف قطرهای آنها در ذیل اند\nمعلوم کنید.\n(۱) ۲۱ فت (۲) ۱۶ گز ۲ فت (۳) یک فرلانگ\nمحیط دائره را با قطر دائره ۳۱۴۱۶ چند فرض کرده رقبهٔ دائر ها‌ئے\nمذکور را که نصف قطر دائر هائی مذکور حسب ذیل معلوم اند\nدر پیمانهٔ مربع فت معلوم کنید.\n(۴) ۲۵ فت (۵) ۴۹۲ فت (۶) ۱/۴ میل\nمحیط دائره را با قطر دائره ۳ ۱/۷ چند فرض کرده نصف قطر دائر هائی\nکه رقبه‌های دائر هائی مذکور حسب ذیل معلوم اند دریافت کنید.\n(۷) ۱۰۰ مربع فت (۸) یک روڈ (۹) ۵ ایکڑ روڈ ۸ پول\nمحیط دائره را با قطر ۳٫۱۴۱۶ چند فرض کرده نصف قطر مندرجهٔ ذیل\nدایره‌های\nآش معلوم اند\nرقبه‌های دائر ها را معلوم کنید.\n(۱۰) ۵۰۰ مربع فت (۱۱) ۲ ایکڑ ۲ روڈ ۱ پول (۱۲) یک مربع میل","chars":698,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00218.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/218","canvas":"https://afghanpress.org/iiif/adl0131/canvas/218","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."}}