AMC 8 2026 Problem 11

AMC8 2026 年第 11

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Squares of side length 1, 1, 2, 3, and 5 are arranged to form the rectangle shown below. A curve is drawn by inscribing a quarter circle in each square and joining the quarter circles in order, from shortest to longest. What is the length of the curve?
边长分别为 1、1、2、3 和 5 的正方形被排列成如下所示的矩形。在每个正方形内画一个四分之一圆,并按从小到大的顺序将这些四分之一圆连接起来形成一条曲线。这条曲线的长度是多少?
AMC 8 2026 Problem 11 figure
  1. A.4π4\pi
  2. B.6π6\pi
  3. C.(132)π\displaystyle (\frac{13}{2})\pi
  4. D.8π8\pi
  5. E.13π13\pi

正确答案 · Correct Answer

B

解析 · Solution

解析整理中

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