1997 AMC 8 第 10 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。
10.
这个正方形区域有多少比例被涂色？条纹宽度相等，图按比例绘制。
What fraction of this square region is shaded? Stripes are equal in width, and the figure is drawn to scale.
小提示：
数出涂色小正方形占总小正方形的比例
Count shaded small squares out of the total
大提示：
按条纹宽度把正方形分成相等的小正方形
Divide the square into equal small squares matching the stripe widths
解答：
可以把大正方形分成 个小正方形。涂色小正方形数为
涂色比例为
所以正确答案是 C。
We can split the square into unit squares. The number of shaded small squares is
The fraction of the square that is shaded is
Thus, C is the correct answer.
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