{"book":"adl0290","page":901,"text":"۴۳۱\n\n(۳۷) آب یک چاه از چشمه می آید و چون در چاه\nمذکور مقدار آب ۱۰۰۰۰ مکعب فٹ باشد\n۷ نفر آب آن را در مدت ۲۰ روز خالی\nکرده می توانند و چون مقدار آب ۱۵۰۰۰\nمکعب فٹ باشد ۵ نفر در مدت ۵۰ روز\nخالی می کنند پس معلوم کنید چند مکعب\nفٹ آب از چشمهء مذکور در چاه می ریزد ؟\n(۳۸) یک حوض سه آبریز ا و ب و ج دارد و\nآبریز ا آن را پر میکند و آبریز ب و ج\nکه متساوی میباشد آن را خالی می کنند\nاول ا را کشوده و چون یک حصه حوض\nپر شود ب را نیز باز می کنیم و حوض مذکور\nدر ۳ ساعت خالی میشود و اگر ج را نیز باب بازمی\nکردیم حوض مذکور در یک ساعت خالی می شد پس معلوم\nکنید که آبریز ب را چند ساعت بعد از ا باز کرده بودیم ؟\n(۳۹) یک حوض دو منفذ دارد که یکی از آنها\nحوض را پر میکند و دیگر خالی اگر هر دو\nمنفذ یکجا باز کرده شود حوض مذکور در ۹\nساعت پر میگردد و اگر منفذ دوم که حوض","chars":741,"image":"https://storage.googleapis.com/adl-page-images/adl0290/00901.jpg","first_page":1,"last_page":1089,"title":"ʻIlm-i ḥisābعالم حساب","permalink":"https://afghanpress.org/book/adl0290/901","canvas":"https://afghanpress.org/iiif/adl0290/canvas/901","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."}}