Cut a cuboid with a length of 2dm, a width of 1dm, and a height of 1dm into two cubes of the same size. What is the length of the sides of the cube in decimeters?
把一个长为2dm、宽为1dm、高为1dm的长方体切割成两个大小相同的正方体，这个正方体的棱长是多少分米？
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