翻訳と辞書 Words near each other ・ Pentagon Memorial ・ Pentagon military analyst program ・ Pentagon Papers ・ Pentagon rapid response operation ・ Pentagon Renovation Program ・ Pentagon road network ・ 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 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 gyrobicupola ： ウィキペディア英語版 Pentagonal gyrobicupola In geometry, the pentagonal gyrobicupola is one of the Johnson solids (''J''31). Like the pentagonal orthobicupola (''J''30), it can be obtained by joining two pentagonal cupolae (''J''5) along their bases. The difference is that in this solid, the two halves are rotated 36 degrees with respect to one another. The ''pentagonal gyrobicupola'' is the third in an infinite set of gyrobicupolae. The pentagonal gyrobicupola is what you get when you take a rhombicosidodecahedron, chop out the middle parabidiminished rhombicosidodecahedron (''J''80), and paste the two opposing cupolae back together. ==Formulae== The following formulae for volume and surface area can be used if all faces are regular, with edge length ''a'':〔Stephen Wolfram, "(Pentagonal gyrobicupola )" from Wolfram Alpha. Retrieved July 24, 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 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.