{"book":"adl0131","page":216,"text":"مساحت\n۲۰۵\nکتاب\n\nمذکور به فت است و کناره طرف اندرون سڑک محیط آن\nدائره است که نصف قطر دائره مذکوره ۳ یای ۴ فت است پس\nبموجب دفعه (۱۲۳) رقبه سڑک مذکور ۳/۷ × ۴/۱۶) و ۳ = ۱۷۵٫۶۰۹۶\n(۲) نصف قطر دائره ۱۵ انچ است ـ نصف قطر آن دائره که رقبه دائره\nمذکوره ۳ رقبه دائره مذکور است چقدر خواهد بود دریافت کنید ـ\nقاعده دریافت کردن رقبه که بیان کرده شده است معلوم میشود\nکه در رقب ہای دو دائر ہا آن نسبت میباشد که در مربع های\nنصف قطرهائی دائر هائی مذکور پس تناسب ذیل حاصل میشود\nمربع ۱ : ۳/۴ : : ۱۵ : مربع نصف قطر مطلوب\nپس مربع نصف قطر مطلوب ۳/۴ × ۱۵ × ۱۵ = ۱۶۸/۷۵\nجذر ۱۶۸/۷۵۰۰۰۰√ = ۱۲٫۹۹ پس نصف قطر مطلوب تقریباً\n۱۳ انچ جواب است ـ\n(۳) نصف قطر دائره ۲۰ انچ است اندرون دائره مذکورست هم مرکز","chars":668,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00216.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/216","canvas":"https://afghanpress.org/iiif/adl0131/canvas/216","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."}}