AMC 8 1997 Problem 24
AMC8 1997 年第 24 题
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Problem Diameter is divided at in the ratio . The two semicircles, and , divide the circular region into an upper (shaded) region and a lower region. The ratio of the area of the upper region to that of the lower region is
直径 被点 分成 的比例。两个半圆 和 将圆形区域分成上部（着色）区域和下部区域。上部区域与下部区域的面积之比是
- A.2:3
- B.1:1
- C.3:2
- D.9:4
- E.5:2
正确答案 · Correct Answer
C
解析 · Solution
解析整理中
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