天气预报15天查询> 其他> 正方体一共有几条边

正方体一共有几条边

更新时间: 2020-10-27 00:00:00     

正方体一共有12条边。用六个完全相同的正方形围成的立体图形叫正方体。侧面和底面均为正方形的直平行六面体叫正方体,即棱长都相等的六面体,又称立方体、正六面体。正方体是特殊的长方体。

正方体的体积(或叫做正方体的容积)=棱长×棱长×棱长;设一个正方体的棱长为a,则它的体积为:V=a×a×a或等于a³。

关键词: 正方体 共有

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-2390941/ | 耗时:0.3955 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=2390941 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=2390941 LIMIT 0,1
select * from tbl_Articles_sphinx where id=2390941 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(2662215,2244220,663099,1604256,173144,237344,138006,1089838,1105785,1535443,1306811,1350841,1060301,1121374,1393889,2096770,1127665,1099193,1115841,207012,1778130,2302609,1130013,1750334,1125568,3154525,1092428,793224,3050745,1131731) ORDER BY field (ArticleID,2662215,2244220,663099,1604256,173144,237344,138006,1089838,1105785,1535443,1306811,1350841,1060301,1121374,1393889,2096770,1127665,1099193,1115841,207012,1778130,2302609,1130013,1750334,1125568,3154525,1092428,793224,3050745,1131731)