有两种答案.不知那个才是正确的.如图,射击运动的抢靶是由10个同心圆组成的,每两个相邻同心圆的半径之差等于中间最小圆的半径.从外向里各个圆环依次叫做1环、2环、3环...正中最小圆围成
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![有两种答案.不知那个才是正确的.如图,射击运动的抢靶是由10个同心圆组成的,每两个相邻同心圆的半径之差等于中间最小圆的半径.从外向里各个圆环依次叫做1环、2环、3环...正中最小圆围成](/uploads/image/z/15234470-62-0.jpg?t=%E6%9C%89%E4%B8%A4%E7%A7%8D%E7%AD%94%E6%A1%88.%E4%B8%8D%E7%9F%A5%E9%82%A3%E4%B8%AA%E6%89%8D%E6%98%AF%E6%AD%A3%E7%A1%AE%E7%9A%84.%E5%A6%82%E5%9B%BE%2C%E5%B0%84%E5%87%BB%E8%BF%90%E5%8A%A8%E7%9A%84%E6%8A%A2%E9%9D%B6%E6%98%AF%E7%94%B110%E4%B8%AA%E5%90%8C%E5%BF%83%E5%9C%86%E7%BB%84%E6%88%90%E7%9A%84%2C%E6%AF%8F%E4%B8%A4%E4%B8%AA%E7%9B%B8%E9%82%BB%E5%90%8C%E5%BF%83%E5%9C%86%E7%9A%84%E5%8D%8A%E5%BE%84%E4%B9%8B%E5%B7%AE%E7%AD%89%E4%BA%8E%E4%B8%AD%E9%97%B4%E6%9C%80%E5%B0%8F%E5%9C%86%E7%9A%84%E5%8D%8A%E5%BE%84.%E4%BB%8E%E5%A4%96%E5%90%91%E9%87%8C%E5%90%84%E4%B8%AA%E5%9C%86%E7%8E%AF%E4%BE%9D%E6%AC%A1%E5%8F%AB%E5%81%9A1%E7%8E%AF%E3%80%812%E7%8E%AF%E3%80%813%E7%8E%AF...%E6%AD%A3%E4%B8%AD%E6%9C%80%E5%B0%8F%E5%9C%86%E5%9B%B4%E6%88%90)
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