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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 gyrobicupola ： ウィキペディア英語版 Elongated pentagonal gyrobicupola In geometry, the elongated pentagonal gyrobicupola is one of the Johnson solids (''J''39). As the name suggests, it can be constructed by elongating a pentagonal gyrobicupola (''J''31) by inserting a decagonal prism between its congruent halves. Rotating one of the pentagonal cupolae (''J''5) through 36 degrees before inserting the prism yields an elongated pentagonal orthobicupola (''J''38). ==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 gyrobicupola )" from Wolfram Alpha. Retrieved July 25, 2010.〕 $V=\backslash frac\backslash left(10+8\backslash sqrt+15\backslash sqrt\backslash left(10+\backslash sqrt+\backslash sqrt\backslash right)a^2\backslash approx27.7711...a^2$ 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 gyrobicupola」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.