{"book":"adl0131","page":104,"text":"کتاب ٩٣ مساحت\n\n(١٠٠) نسبت طولہا محیط و قطر دائره معلومات اکثر مراتب بضرورت\nبوقوع می‌آید اگرچه به نسبت درست و صحیح دریافت کرده نمیشود\nمگر تاہم باین قدر صحت معلوم میشود که در کار روائی علمی مقاصد\nخلل عائد نمیشود.\n(١٠١) قاعده\nقطر را در ١/٧ ٣ یعنی ٢٢/٧ ضرب داده شود یا قطر را در ٢٢ ضرب داده بر ٧\nتقسیم کنید پس محیط مطلوب خواهد بود.\n(١٠٢) تمثیلات\n(١) قطر دائرہ ۴٠ فٹ ٨ انچ است محیط را دریافت کنید.\n۴ فٹ ٨ انچ = ٥٦ انچ و ٥٦ × ٢٢/٧ = ٨ × ٢٢ = ١٧٦\nپس محیط دائره تقریباً ١٧٦ انچ یا ١۴ فٹ ٨ انچ مطلوب است.\n۴/٢٥٦ × ٢٢ = ٨/٥١٢ = ٩٣١٢٣٢ ÷ ٧ = ٧٦/١٣٣\n١١ × ٣ ١١ ٩٣/٦٣٢\nپس محیط دائره = ٣١٣/٧٦ فٹ مطلوب است.","chars":590,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00104.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/104","canvas":"https://afghanpress.org/iiif/adl0131/canvas/104","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."}}