一个三棱柱的底面是正三角形，侧棱垂直于底面，它的三视图及其尺寸如下（单位cm），则该三棱柱的表面积为：

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一个三棱柱的底面是正三角形，侧棱垂直于底面，它的三视图及其尺寸如下（单位cm），则该三棱柱的表面积为：（）

A：^{$24 π c m^{2}$}

B：^{$(24 + 8 \sqrt{3}) c m^{2}$}

C：^{$14 \sqrt{3} c m^{2}$}

D：^{$18 \sqrt{3} c m^{2}$}

上一题下一题 0.0难度选择题更新时间:2011-12-23 05:31:20

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B

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As we know, English is w____ used around the world. But can all English speakers understand each other all the time? Of c____ not. ____（甚至）the same word can have many different meanings. Sometimes the meaning can change, depending on the country where it is ____（说）. For example, there are differences between British English and American English. Also, Australian English is a little different from British English. If you want to succeed in making y____ understood, you need to know some of these differences.

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