Chinese Text Project |
Show statistics Edit searchSearch details: |
---|
Scope: Hai Dao Suan Jing Request type: Paragraph |
Condition 1: Contains text "立兩表東西去六丈齊人目以索連之" Matched:1. |
Total 1 paragraphs. Page 1 of 1. |
《海島算經 - Hai Dao Suan Jing》 | [Three Kingdoms] 263 | Books referencing 《海島算經》 Related resources |
3 | 海島算經: | 今有南望方邑,不知大小。立兩表東、西去六丈,齊人目,以索連之。令東表與邑東南隅及東北隅參相直。當東表之北卻行五步,遙望邑西北隅,入索東端二丈二尺六寸半。又卻北行去表一十三步二尺,遙望邑西北隅,適與西表相參合。問邑方及邑去表各幾何? |
答曰:邑方三里四十三步、四分步之三;邑去表四里四十五步。 | ||
術曰:以入索乘後去表,以兩表相去除之,所得為景差;以前去表減之,不盡以為法。置後去表,以前去表減之,餘以乘入索為實。實如法而一,得邑方。求去表遠近者:置後去表,以景差減之,餘以乘前去表為實。實如法而一,得邑去表。 |
Total 1 paragraphs. Page 1 of 1. |
---|