{"book":"adl0131","page":220,"text":"کتاب ۲۰۹ مساحت\n\n(۱۸) رقبۀ ۱/۴ دائرہ ۷ مربع گزست پس نصف قطر دائرۀ مذکور را دریافت کنید\n(۱۹) محیط یک دائرہ ۷۰ فٹ است پس رقبۀ دائرۀ مذکور را دریافت کنید\n(۲۰) محیط دائره ۱/۴ میل است پس رقبۀ دائرۀ مذکور را دریافت کنید\n(۲۱) رقبۀ یک دائره نصف ایکڑ است پس محیط دائرۀ مذکور را\nدریافت کنید۔\n(۲۲) رقبۀ یک دائره برابر است بآن مستطیل که طول و عرض\nمستطیل مذکور ۴۰۰ فٹ و ۲۵۶ فٹ است پس محیط دائرۀ مذکور را\nمعلوم کنید۔\n(۲۳) نصف قطر یک دائره ۸ فٹ است پس دریافت کنید که\nنصف قطر دائرہ کہ رقبۀ دائرۀ مذکور ۱/۴ باشد چقدر خواهد بود۔\n(۲۴) نصف قطر یک دائره ۱۰ انچ است پس دریافت کنید که\nنصف قطر دائرہ کہ رقبۀ دائرۀ مذکور ۱/۲ باشد چقدر خواهد بود۔\n(۲۵) نصف قطر یک دائره ۱۰ فٹ است و دائرۀ مذکور بذریعۀ","chars":672,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00220.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/220","canvas":"https://afghanpress.org/iiif/adl0131/canvas/220","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."}}