AMC 8 1987 Problem 12

AMC8 1987 年第 12 题

面积与周长（综合）★★★☆☆

What fraction of the large 12 by 18 rectangular region is shaded?

着色部分占 12 × 18 大矩形区域的几分之几？

AMC 8 1987 Problem 12 figure

A. $\displaystyle \frac{1}{108}$
B. $\displaystyle \frac{1}{18}$
C. $\displaystyle \frac{1}{12}$
D. $\frac29$
E. $\frac13$

正确答案 · Correct Answer

C

解析 · Solution

解析整理中

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