{"book":"adl0131","page":224,"text":"کتاب\n۲۱۳\nمساحت\n\n(۳۹) نصف قطر یک دائره یک فٹ است اگر اندرون دائرہ مذکور\nیک مثلث متساوی الاضلاع ساخته شود پس رقبه در میانی سطح\nمثلث مذکور و دائرہ مذکور را دریافت کنید- ملاحظه فرمائید دفعه ۹۹\n(۴۰) اضلاع یک مثلث قائم الزاویه ۲۰ فٹ و ۲۱ فٹ اند- پس\nقطر دائره که برابر و ترمثلث قائم الزاویه باشد رقبه دایره مذکور را\nدریافت کنید-\n(۴۱) یک شکل قائم الزاویه ۸ فٹ در طول و ۷ فٹ در عرض ست\nپس دریافت کنید که احاطه دائره اگر برابر باشد با احاطه شکل\nقائم الزاویه مذکور رقبه دائرہ مذکور چقدر خواهد بود-\n(۴۲) اضلاع یک مثلث ۱۳ و ۱۴ و ۱۵ فٹ اند- پس رقبه دائره\nاحاطه مثلث مذکور را دریافت کنید- اگر احاطه دائره و مستطیل\nبا هم برابر باشد پس رقبه دائره زیاده میباشد وقتیکه طول وعرض\nمستطیل معلوم است پس دعوای مذکوره را در صورتی که","chars":705,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00224.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/224","canvas":"https://afghanpress.org/iiif/adl0131/canvas/224","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."}}