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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Elongated pentagonal orthobicupola ： ウィキペディア英語版 Elongated pentagonal orthobicupola In geometry, the elongated pentagonal orthobicupola is one of the Johnson solids (''J''38).〔http://mathworld.wolfram.com/ElongatedPentagonalOrthobicupola.html〕 As the name suggests, it can be constructed by elongating a pentagonal orthobicupola (''J''30) by inserting a decagonal prism between its two congruent halves. Rotating one of the cupolae through 36 degrees before inserting the prism yields an elongated pentagonal gyrobicupola (''J''39). ==Formulae== The following formulae for volume and surface area can be used if all faces are regular, with edge length ''a'':〔Stephen Wolfram, "(Elongated pentagonal orthobicupola )" from Wolfram Alpha. Retrieved July 25, 2010.〕 $V=\backslash frac(10+8\backslash sqrt+15\backslash sqrt(10+\backslash sqrt+\backslash sqrt)a^2\backslash approx27.7711...a^2$ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Elongated pentagonal orthobicupola」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.