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內周 & 外周

Autore:spkwan

2020奧運場館

2020奧運場館 — NY Daily News

化曲為直化繁為簡

化曲為直化繁為簡 — https://cd1.edb.hkedcity.net/cd/sbcds/publication/maths/maths_newsletter_2014_11.pdf

思考問題

A 為圍繞半徑10m小池塘的步道, B為圍繞半徑10km火山的火山口湖外圍道路。兩者路寬皆為6m, 路肩設有柵欄。問B的內側及外側柵欄長度是A內外側柵欄長度的幾倍?

Banked Track - Darren McQuillan

Banked Track - Darren McQuillan — https://www.ggbm.at/GM6zeGPF

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