AMC 8 2024 Problem 3
AMC8 2024 年第 3 题
面积与周长（综合）★★☆☆☆
Four squares of side length 4, 7, 9, and 10 units are arranged in increasing size order so that their left edges and bottom edges align. The squares alternate in color white-gray-white-gray, respectively, as shown in the figure. What is the area of the visible gray region in square units?
将四个边长分别为 4、7、9、10 个单位的正方形从小到大依次排列，使得它们的左侧边和底边分别对齐。四个正方形的颜色按照白色-灰色-白色-灰色的顺序交替出现，如图所示。请问灰色可见区域的面积为多少个平方单位？
- A.42
- B.45
- C.49
- D.50
- E.52
正确答案 · Correct Answer
E
解析 · Solution
解析整理中
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