{"book":"adl0290","page":356,"text":"۳۴۹\nبرای افاده طلباء در اینجا نیز نوشته میشود *\n۱۳۵ مستطیل و مربع\nمستطیل شکل چهار ضلع می با شد که هر\nزاویه آن زاویه\nقائمه باشد * مستطیل\nمربع شکل چهار\nضلع است که جمیع\nاضلاع آن باهم برابر مربع\nوجمیع زوایای آن\nقائمه باشند *\nطریق دریافت کردن مساحت مستطیل و\nمربع این است که طول را در عرض ضرب\nکنید حاصل ضرب مساحت مستطیل یا مربع\nخواهد بود *\nمثال ۱ طول یک قطعه مستطیل ۵ گز\nاست و عرض آن ۳ گز پس مساحت آن\nمعلوم کنید *\nمساحت = ۵ × ۳ = ۱۵ مربع گز *","chars":436,"image":"https://storage.googleapis.com/adl-page-images/adl0290/00356.jpg","first_page":1,"last_page":1089,"title":"ʻIlm-i ḥisābعالم حساب","permalink":"https://afghanpress.org/book/adl0290/356","canvas":"https://afghanpress.org/iiif/adl0290/canvas/356","source":"https://afghanistandl.nyu.edu/books/adl0290/","source_pdf":"https://afghanistandl.nyu.edu/pdf/adl0290_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."}}