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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 Stadium (geometry) ： ウィキペディア英語版 Stadium (geometry) A stadium is a two-dimensional geometric shape constructed of a rectangle with semicircles at a pair of opposite sides. Alternative names include discorectangle and obround.〔http://www.vista-industrial.com/obround.php〕〔http://www.ljstar.com/Products/industrial-sight-glass-obround-level-gauges〕〔http://www.phelpsweb.com/phel1_16.htm〕〔http://www.turnertanks.com/HorizontalObround.html〕 A ''capsule'' is produced by revolving a stadium around the line of symmetry that bisects the semicircles. The shape is used for athletics and horse racing tracks. == Formulas == The perimeter of a stadium is calculated by the formula $P\; =\; 2\; (\backslash pi\; r+a)$ and the area by $A\; =\; \backslash pi\; r^2\; +\; 2ra\; =\; r(\backslash pi\; r\; +\; 2a),$ where ''a'' is the length of the straight sides and ''r'' is the radius of the semicircles.〔(【引用サイトリンク】title=Stadium Calculator )〕 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「Stadium (geometry)」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.