{"book":"adl0131","page":69,"text":"کتاب ۵۸ مساحت\n\nوتر و ضلع دیگر مثلث مذکور را دریافت کنید\n(۱۹) یک زینه ۲۵ فت در از است بر اثر یک دیوار ایستاده\nمعلوم کنید که زینه مذکور چقدر پس کرده شود که نوک بالائی زینه\nاز دیوار یک فت پایان شود -\n(۲۰) یک زینه ۴۰ فت در از در بازار مستقیم استاده است که\nمکان بازار تا دریچه بلند که ۲۴ فت بلند باشد میرسد و اگر\nمذکور را گشتانده بدیگر طرف مکان ایستاده کنید تا دریچه\nکه ۳۲ فت بلند باشد بر سد پس عرض بازار را دریافت کنید\n(۲۱) از بنیاد یک مکان بفاصله ۴۰ فت پائی یک زینه را\nبالائی زینه مذکور از زمین با سقف مکان ۴۸ فت بلند چسپانید\nاگر زینه مذکور را گشتانده بدیگر طرف مکان بازار که به بلندی\n۲۰ فت میرسد بچسپاند پس عرض بازار را دریافت کنید\n(۲۲) ضلع یک مربع یک انچ است مقدار قطر مربع مذکور\nاینچ","chars":683,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00069.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/69","canvas":"https://afghanpress.org/iiif/adl0131/canvas/69","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."}}