{"book":"adl0290","page":359,"text":"۳۵۲\nدر قاعده ضرب کنید و حاصل ضرب را بر ۲\nتقسیم کنید خارج قسمت مساحت آن خواهد بود ؟\nمثال ۲ عمود مثلث قائم الزاویه ۱۵\nگز و قاعده آن ۳۰\nگز است پس مساحت\nآن را معلوم کنید *\nمساحت = ۱۵ × ۳۰ / ۲\n= ۲۲۵ مربع گز\n= ۲۲۵ / ۹ = ۲۵ بسواسه\n= ۱ بوه ۵ بسواسه\nامثله نمبر ۸۸\nدر امثله ذیل مساحت معلوم کنید :-\n(۱) یک ضلع مثلث ۲۲۴ گز و عمود از راس\nزاویهٔ مقابل ۱۱۶ گز *\n(۲) یک ضلع مثلث ۴۶۴ انچ و عمود از راس\nزاویه مقابل ۸۷ فٹ *\n(۳) یک ضلع مثلث ۱۱۱۸ گز و عمود از راس زاویه\nمقابل ۲۷ گز *\nعمود ۱۵ گز\n۳۰ گز\nقاعده","chars":485,"image":"https://storage.googleapis.com/adl-page-images/adl0290/00359.jpg","first_page":1,"last_page":1089,"title":"ʻIlm-i ḥisābعالم حساب","permalink":"https://afghanpress.org/book/adl0290/359","canvas":"https://afghanpress.org/iiif/adl0290/canvas/359","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."}}