Answer :

konrad509
[tex]6a^2=384\\ a^2=64\\ a=8 \ mm[/tex]
kate200468
[tex]a\ \rightarrow\ the\ long\ of\ each\ edge\ of\ the\ cube\\the\ surface\ area\ of\ a\ game\ cube=384\ mm^2\\\\6a^2=384\ /:6\\\\a^2=64\ \ \ \Rightarrow\ \ \ a=8\\\\Ans.\ the\ long\ of\ each\ edge\ of\ the\ cube\ is\ 8\ mm.[/tex]

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