练7.1 埃及金字塔
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说明
金字塔的侧面是由四个大小相同的等腰三角形构成的。给出三角形的底和高,输出其中一个侧面的面积。
输入格式
输入两个数分别是底和高。
输出格式
输出三角形的面积。
样例
9 10s=45
You cannot submit for this problem because the contest is ended. You can click "Open in Problem Set" to view this problem in normal mode.
金字塔的侧面是由四个大小相同的等腰三角形构成的。给出三角形的底和高,输出其中一个侧面的面积。
输入两个数分别是底和高。
输出三角形的面积。
9 10s=45
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