勾股定理,一棱长为3cm的正方体,把所有的面都分成如图所示为一棱长为3cm的正方体,把所有的面都分成3×3个小正方形,其边长都为1cm,假设一只蚂蚁每秒爬行2cm,则它从下底面A点沿表面爬行于右
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![勾股定理,一棱长为3cm的正方体,把所有的面都分成如图所示为一棱长为3cm的正方体,把所有的面都分成3×3个小正方形,其边长都为1cm,假设一只蚂蚁每秒爬行2cm,则它从下底面A点沿表面爬行于右](/uploads/image/z/2664885-21-5.jpg?t=%E5%8B%BE%E8%82%A1%E5%AE%9A%E7%90%86%2C%E4%B8%80%E6%A3%B1%E9%95%BF%E4%B8%BA3cm%E7%9A%84%E6%AD%A3%E6%96%B9%E4%BD%93%2C%E6%8A%8A%E6%89%80%E6%9C%89%E7%9A%84%E9%9D%A2%E9%83%BD%E5%88%86%E6%88%90%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%E4%B8%BA%E4%B8%80%E6%A3%B1%E9%95%BF%E4%B8%BA3cm%E7%9A%84%E6%AD%A3%E6%96%B9%E4%BD%93%2C%E6%8A%8A%E6%89%80%E6%9C%89%E7%9A%84%E9%9D%A2%E9%83%BD%E5%88%86%E6%88%903%C3%973%E4%B8%AA%E5%B0%8F%E6%AD%A3%E6%96%B9%E5%BD%A2%2C%E5%85%B6%E8%BE%B9%E9%95%BF%E9%83%BD%E4%B8%BA1cm%2C%E5%81%87%E8%AE%BE%E4%B8%80%E5%8F%AA%E8%9A%82%E8%9A%81%E6%AF%8F%E7%A7%92%E7%88%AC%E8%A1%8C2cm%2C%E5%88%99%E5%AE%83%E4%BB%8E%E4%B8%8B%E5%BA%95%E9%9D%A2A%E7%82%B9%E6%B2%BF%E8%A1%A8%E9%9D%A2%E7%88%AC%E8%A1%8C%E4%BA%8E%E5%8F%B3)
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