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Explanation: There's only one obvious way to measure the linear dimension of a cube — along its edge. "6.5cm cube" is understandable enough. Mentioning edges and faces and miscellaneous geometry in a text aimed at a general audience would just confuse some people: apparently, this happened to the author of the source text who mixed up edges and faces.
Denis Lyanda Local time: 07:08 Specializes in field Native speaker of: Russian PRO pts in category: 20