{"book":"adl0131","page":215,"text":"کتاب\n۲۰۴\nمساحت\n\n۳ مربع فُت و رقبهٔ دائره ۳٫۱۴۱۶ مربع فُت است از جواب سوال\nنمبر (۱۰) فصل (۱۵) ظاهر میشود که کثیر الاضلاع منتظم که ۳۲۰ ضلع دارا\nباشد اندرون دائره که نصف قطر دائرهٔ مذکور یک فُت باشد\nساخته شود رقبه کثیر الاضلاع مذکور ۳٫۱۴۱۵۰۵ مربع فُت میباشد\nو از ملاحظهٔ نتیجه های مذکور معلوم میشود که اگر کثیر الاضلاع منتظم\nکه از حد زیاده اضلاع داشته باشد اندرون دائره ساخته شود\nپس مقابلهٔ هر شیأ که در مذکوره بالا ذکر نموده ایم در آنها اینقدر کم\nتفاوت میماند که هرگز قابل لحاظ نمیباشد.\n(۱۶۸) چند تمثیلات را حل کرده در ذیل بیان مینمائیم۔\n(۱) قطر یک مدوّر صحن ۸۰ فُت است اندرون صحن مذکور یک\nسڑک که در عرض یک گز است ساخته شده است رقبهٔ\nصحن مدوّر مذکور را دریافت کنید۔\nکنارهٔ طرف بیرون سڑک محیط آن دائره است که نصف قطر دائره\nمذکور","chars":725,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00215.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/215","canvas":"https://afghanpress.org/iiif/adl0131/canvas/215","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."}}