{"book":"adl0131","page":98,"text":"مساحت\n۸۷\nکتاب\nالف ی = ۲۲ پس بموجب قاعده دفعه (۶۰) ی د = ۱۰ و موافق دفعه (۸۰)\nی ف = ۲۷×۲۲ / ۱۰ = ۷، ۶۱ پس قطر دایره ۶، ۷۶ انچ مطلوب ست\n(۲) وتر قوس ۳۰ انچ و وتر نصف قوس ۵، ۱۰ انچ است قطر دایره را\nدریافت کنید\nدر مثال مذکور -\nاد = ای = ۵، ۱۰ پس بموجب دفعه (۶۰) ی د = ۵ ۲، ۱۰ ۷\nاز عمل کردن جذر تا چهار مراتب کسور عشاریه ی د= ۱۵، ۲، ۳ بعد\nبموجب دفعه (۸۰) ی ف = ۵، ۱۰ × ۵، ۱۰ / ۱۵، ۲، ۳ = ۴۳، ۳۴ تقریباً\nپس قطر دائره تقریباً ۴۳، ۳۴ انچ جواب مطلوب است -\n(۹۹) بطریق مشق یک مثلث متساوی الاضلاع و یک شکل اضلاع\n۱۲ اندرون دائرۀ منتظم ساخته حساب اضلاع اینها را حل کرده در ذیل بیان مینمایم\nیک دائره بکشید و در دائره مذکور\nبرابر نصف قطر وتر اب و ب ج","chars":633,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00098.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/98","canvas":"https://afghanpress.org/iiif/adl0131/canvas/98","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."}}