{"book":"adl0131","page":212,"text":"کتاب ۲۰۱ مساحت\n\nهر دو دائرہائی مذکور هم مرکز باشند یا نباشند\n(۱۶۶) قاعدۀ که در دفعه (۱۵۸) بیان کرده شده است اکثر اوقات باید که مبتدی\nضرور توجه بفرمایند ماسوای قاعدۀ مذکوره بالا چند دیگر قواعد نیز برای\nدریافت کردن رقبه دائرها معین اند مگر چندان زیاده در کار آمد نمیباشند\nو از جمله اینها برای دریافت کردن رقبۀ دائرها سه قواعد را\nدر ذیل بیان مینمائیم\n(۱) نصف قطر را با محیط ضرب داده نصف حاصل ضرب رقبۀ\nدائرۀ مطلوب خواهد بود\n(۲) مربع قطر را در ۷۸۵۴ ضرب بدهید حاصل ضرب رقبۀ دائرۀ\nمطلوب خواهد بود\n(۳) مربع محیط را بر ۳۱۲۶×۳۱ تقسیم کنید و یا مربع محیط را در\n۰۷۹۵۸ ضرب بدهید رقبۀ دائرۀ مطلوب خواهد بود\n(۱۶۷) در دفعه (۱۶۶) سه قواعد که نوشته شده اند از نجمله قاعدۀ","chars":653,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00212.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/212","canvas":"https://afghanpress.org/iiif/adl0131/canvas/212","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."}}