一个长方体的所有棱长之和是72 cm,它的长宽高之比是3:2:1,则长方体体积为( )。A.162 cm3 B.1296 cm3 C.2592 cm3...

作者: tihaiku 人气: - 评论: 0
问题 一个长方体的所有棱长之和是72 cm,它的长宽高之比是3:2:1,则长方体体积为( )。
选项 A.162 cm3 B.1296 cm3 C.2592 cm3 D.10368 cm3
答案 A
解析 由长方体性质知,长方体长、宽、高之和为72÷4=18 cm,则可得出长为9 cm,宽为6 cm,高为30m.所以体积为9×6×3=162 cm3。

相关内容:长方体,棱长,之和,高之比,体积,B.1296,C.2592,cm3...

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