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16-11-2014
Mathematics

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The surface area of a cube is 54cm2. what is the area of one face of the cube? What is the length of one edge of the cube?

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16-11-2014

[tex]Area\ of\ cube:\\\\A=6a^2\\\\54=6a^2\ \ \ \ \ \ \ |:6\\\\a^2=9\ -\ area\ of\ the\ one\ face\ of\ the\ cube\\\\a=3\ -\ length\ of\ one\ edge[/tex]

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