奥数的有题我不会请教下,是:“一个长方体木块从上部和下部分别截去高为二cm和三cm的长方体后,便成为一个正方体,同时表面积减少了120平方厘米,则原长方体的体积是多少立方厘米?”说下,
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![奥数的有题我不会请教下,是:“一个长方体木块从上部和下部分别截去高为二cm和三cm的长方体后,便成为一个正方体,同时表面积减少了120平方厘米,则原长方体的体积是多少立方厘米?”说下,](/uploads/image/z/3727821-21-1.jpg?t=%E5%A5%A5%E6%95%B0%E7%9A%84%E6%9C%89%E9%A2%98%E6%88%91%E4%B8%8D%E4%BC%9A%E8%AF%B7%E6%95%99%E4%B8%8B%2C%E6%98%AF%EF%BC%9A%E2%80%9C%E4%B8%80%E4%B8%AA%E9%95%BF%E6%96%B9%E4%BD%93%E6%9C%A8%E5%9D%97%E4%BB%8E%E4%B8%8A%E9%83%A8%E5%92%8C%E4%B8%8B%E9%83%A8%E5%88%86%E5%88%AB%E6%88%AA%E5%8E%BB%E9%AB%98%E4%B8%BA%E4%BA%8Ccm%E5%92%8C%E4%B8%89cm%E7%9A%84%E9%95%BF%E6%96%B9%E4%BD%93%E5%90%8E%2C%E4%BE%BF%E6%88%90%E4%B8%BA%E4%B8%80%E4%B8%AA%E6%AD%A3%E6%96%B9%E4%BD%93%2C%E5%90%8C%E6%97%B6%E8%A1%A8%E9%9D%A2%E7%A7%AF%E5%87%8F%E5%B0%91%E4%BA%86120%E5%B9%B3%E6%96%B9%E5%8E%98%E7%B1%B3%2C%E5%88%99%E5%8E%9F%E9%95%BF%E6%96%B9%E4%BD%93%E7%9A%84%E4%BD%93%E7%A7%AF%E6%98%AF%E5%A4%9A%E5%B0%91%E7%AB%8B%E6%96%B9%E5%8E%98%E7%B1%B3%3F%E2%80%9D%E8%AF%B4%E4%B8%8B%2C)
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