AMC 8 2025 Problem 10

AMC8 2025 年第 10

面积与周长(综合)★★☆☆☆
In the figure below, ABCDABCD is a rectangle with sides of length AB = 5 inches and AD = 3 inches. Rectangle ABCDABCD is rotated 9090^\circ clockwise around the midpoint of side DCDC to give a second rectangle. What is the total area, in square inches, covered by the two overlapping rectangles?
如图所示,ABCD是一个长方形,其边长AB = 5英寸,AD = 3英寸。长方形ABCD绕DC边的中点顺时针旋转90°,得到第二个长方形。请问这两个重叠长方形覆盖的总面积是多少平方英寸?
AMC 8 2025 Problem 10 figure
  1. A.21
  2. B.22.25
  3. C.23
  4. D.23.75
  5. E.25

正确答案 · Correct Answer

D

解析 · Solution

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