1954 AMC 12 第 5 题
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所有题目均经美国数学协会（MAA）官方合法授权使用。
5.
一个正六边形内接于半径为 英寸的圆。它的面积为：
A regular hexagon is inscribed in a circle of radius inches. Its area is:
平方英寸
sq. in.
平方英寸
sq. in.
平方英寸
sq. in.
平方英寸
sq. in.
平方英寸
sq. in.
小提示：
内接正六边形的边长等于圆的半径
An inscribed regular hexagon has side length equal to the circle’s radius
大提示：
将正六边形分成六个边长为 的等边三角形
Divide the hexagon into six equilateral triangles of side
解答：
这个正六边形由六个边长为 的等边三角形组成。它的面积为 平方英寸。
因此，正确答案是 A。
The hexagon consists of six equilateral triangles of side Its area is square inches.
Thus, the correct answer is A.
其他年份的第 5 题
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