AMC 8 2008 Problem 18

AMC8 2008 年第 18 题

圆★★★☆☆

Two circles that share the same center have radii 10 meters and 20 meters. An aardvark runs along the path shown, starting at A and ending at K. How many meters does the aardvark run?

两个同心圆的半径分别是 10 米和 20 米。一个土豚沿着图示路径运动，从 A 点开始到 K 点结束。则土豚总共运动了多少米？

A. $10\pi+20$
B. $10\pi+30$
C. $10\pi+40$
D. $20\pi+20 \\$
E. $20\pi+40$

正确答案 · Correct Answer

E

解析 · Solution

解析整理中

继续练习

免费刷 2008 整卷 →登录解锁诊断（看你哪儿弱）→