翻訳と辞書 Words near each other ・ Pentagon Row ・ Pentagon Shopping Centre ・ Pentagon station ・ Pentagon Station (disambiguation) ・ Pentagonal antiprism ・ Pentagonal bifrustum ・ Pentagonal bipyramid ・ Pentagonal bipyramidal molecular geometry ・ Pentagonal cupola ・ Pentagonal gyrobicupola ・ Pentagonal gyrocupolarotunda ・ Pentagonal hexecontahedron ・ Pentagonal icositetrahedron ・ Pentagonal number ・ Pentagonal number theorem ・ Pentagonal orthobicupola ・ Pentagonal orthobirotunda ・ Pentagonal orthocupolarotunda ・ Pentagonal planar molecular geometry ・ Pentagonal polytope ・ Pentagonal prism ・ Pentagonal pyramid ・ Pentagonal pyramidal molecular geometry ・ Pentagonal pyramidal number ・ Pentagonal rotunda ・ Pentagonal tiling ・ Pentagonal trapezohedron ・ Pentagonia ・ Pentagonia (disambiguation) ・ Pentagonia (plant) Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Pentagonal orthobicupola ： ウィキペディア英語版 Pentagonal orthobicupola In geometry, the pentagonal orthobicupola is one of the Johnson solids (''J''30). As the name suggests, it can be constructed by joining two pentagonal cupolae (''J''5) along their decagonal bases, matching like faces. A 36-degree rotation of one cupola before the joining yields a pentagonal gyrobicupola (''J''31). The ''pentagonal orthobicupola'' is the third in an infinite set of orthobicupolae. ==Formulae== The following formulae for volume and surface area can be used if all faces are regular, with edge length ''a'':〔Stephen Wolfram, "(Pentagonal orthobicupola )" from Wolfram Alpha. Retrieved July 23, 2010.〕 $V=\backslash frac(5+4\backslash sqrt)a^3\backslash approx4.64809...a^3$ $A=(10+\backslash sqrt(10+\backslash sqrt+\backslash sqrt\})a^2\backslash approx17.7711...a^2$ 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「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.