{"book":"adl0131","page":211,"text":"کتاب ۲۰۰ مساحت\n\nرقبه دائره اندرونی = ۱۰*۱۰*۳۱۴۱۶ = ۳۱۴۱۶م فٹ\nرقبه دائره بیرونی = ۱۲*۱۲*۳۱۴۱۶ = ۴۵۲۳۹۰۴م فٹ\nو ۴۵۲۳۹۰۴ - ۳۱۴۱۶ = ۱۳۸۲۳۰۴\nپس رقبه حلقه مذکور ۱۳۸۲۳۰۴ مربع فٹ مطلوب است-\n(۲) نصف قطر دو هم مرکز دائره ها ۳ گره و ۵ فٹ اند پس رقبه حلقه مدور انکو\nدریافت کنید-\n۳ گز= ۹ فٹ : ۹+۵ = ۱۴\n۴= ۵-۹\n۱۷۵۹۲۹۶ = ۳۱۴۱۶*۴*۱۴\nپس رقبه حلقه مذکور ۱۷۵۹۲۹۶ مربع فٹ-\n(۱۶۵) اگر یک دائره اندرون دیگر دائره بالکل واقع باشد پس\nصاف ظاهر است که موافق دفعه (۱۶۳) رقبه سطح مذکور معلوم\nخواهد شد که در میان محیط های هر دو دائره ها واقع است خواد\nاگر دو","chars":526,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00211.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/211","canvas":"https://afghanpress.org/iiif/adl0131/canvas/211","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."}}