{"book":"adl0131","page":152,"text":"کتاب\n۱۴۱\nمساحت\n\nسطح متوازی الاضلاع مذکور است پس ارتفاع سطح متوازی الاضلاع\nمذکور را دریافت کنید.\nمجموعه اضلاع متوازی الاضلاع ۱۶ + ۳۲ فت یا ۴۸ فث است\nپس یک ضلع مربع مجموعه اضلاع مذکور ۱۲ فت است و رقبه ضلع\nمربع مجموعه اضلاع مذکور ۱۴۴ مربع فث است پس رقبه سطح متواز\nالاضلاع ۱۴۴ × ۲/۳ = ۹۶ مربع فت است پس اگر یک ضلع که در طول\n۸ فت باشد قاعده فرض کرده شود پس ارتفاع ۹۶ ÷ ۸\n= ۹۶/۸ = ۱۲ فت است و اگر یک ضلع که در طول ۱۲ فت باشد\nقاعده تصور کرده شود پس ارتفاع ۹۶/۱۲ = ۸ فت است.\n(۲) هر یک ضلع معین ۸ فت و قطر معین نیز ۸ فت است\nپس رقبه معین مذکور را دریافت کنید.\nاز کشیدن قطر معین مذکور در دو مثلث های مساوی الاضلاع\nمنقسم خواهد شد و بموجب دفعه (۴۸) ارتفاع ۸۶۶۱۸×۸ افت","chars":654,"image":"https://storage.googleapis.com/adl-page-images/adl0131/00152.jpg","first_page":1,"last_page":381,"title":"Kitāb-i ʻIlm i masāḥat کتاب عالم ا مساحت","permalink":"https://afghanpress.org/book/adl0131/152","canvas":"https://afghanpress.org/iiif/adl0131/canvas/152","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."}}