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一、算一算小刚从A点出发,如下图,走外面一圈回到A点,小强也从A点出发,走里面8字形两个小圈回到A点。他俩谁走的路长?为什么?
First, count Xiaogang start from point A, as shown below, go back to the outside circle A point, Xiaoqiang also starting from A point, go inside the small two-figure 8-shaped circle back to A point. Which of them is the long way to go and why?