翻訳と辞書 Words near each other ・ Olofström Municipality ・ Olofströms IBK ・ Olofströms IK ・ Olog ・ Ologamasidae ・ Ologamasiphis ・ Ologamasus ・ Ologhe ・ OLogic ・ Ologies (series) ・ Ologun ・ Ology ・ Oloh, Mississippi ・ Oloibiri ・ Oloibiri Oilfield ・ Oloid ・ Oloiphis ・ Oloirien ・ Oloiyangalani ・ Olojo festival ・ Olokhan Musayev ・ Olokizumab ・ Olokun ・ Olokun Festival ・ Olokurto ・ Olol Dinle ・ Ololopa, California ・ Olom ・ Olom-Kyuyole ・ Oloma language 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 Oloid ： ウィキペディア英語版 Oloid An oloid is a three-dimensional curved geometric object that was discovered by Paul Schatz in 1929. It is the convex hull of a skeletal frame made by placing two linked congruent circles in perpendicular planes, so that the center of each circle lies on the other circle. The distance between the circle centers equals the radius of the circles. One third of each circle's perimeter lies inside the convex hull, so the same shape may be also formed as the convex hull of the two remaining circular arcs each spanning an angle of 4π/3. ==Surface area and volume== The surface area of an oloid is given by:〔.〕 :$\backslash !A\; =\; 4\backslash pi\; r^2$ exactly the same as the surface area of a sphere with the same radius. In closed form, the enclosed volume is〔〔(OEIS A215447 ), OEIS A215447〕 :$\backslash frac\; \backslash left(2\; E\backslash left(\backslash frac\backslash right)\; +\; K\backslash left(\backslash frac\backslash right)\backslash right)r^$, where ''K'' and ''E'' denote the complete elliptic integrals of the first and second kind respectively. A numerical calculation gives: :$\backslash !V\; \backslash approx\; 3.0524184684r^$ 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「Oloid」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.