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18 March, 02:52

Grogg stacks three identical cubes to create a rectangular prism with surface area of $84$ square inches. what is the surface area, in square inches, of one of groggs cubes

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  1. 18 March, 03:21
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    Alrighty

    3 cubes

    if you stack them then you can cover, at most 3 faces

    each cube has 6 faces

    so 6*3=18

    minus the 3 coverd is 18-3=15

    so if the surfece area is equal to 15 of those faces ten

    84=15 faces

    divide by 15

    84/15=area of 1 face

    a cube has 6 faces to multiply by 6

    84/15 times 6=504/15=168/5=33.6 square inches is the surface area of one of grogg's cubes
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