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The correct answer is:  [A]:  " 384 in² " . _______________________________________________________ Explanation: ______________________________________________________ The formula for the surface area of a cube is: ______________________________________________________              →   A   =   6a²  ; ______________________________________________________             →   in which:   ______________________________________________________                             A  =  surface area of the cube— for which we shall solve ;                                                 (in "square units" ; or, " in² " ; in our case) ;                              a= side length = " 8 in " (given);          →  Note:  A cube has all equal side lengths.    →  The "6" in the formula accounts for "6 sides" of a cube. _______________________________________________________ →  To solve for the surface area of the cube; plug in our known value(s);                 &  solve;  as follows: _______________________________________________________                           →  A  =  6 a²  ;                                     =  6 * (8 in)²  ;                                     =  6 * 8² * in² ;                                     =  6 * 8 * 8 * in² ;                                      =  48 * 8 * in² ;                                      =  384  in²  ; _______________________________________________________ The answer is:  " 384 in² " ;   →  which is:  Answer choice:  [A]:  " 384 in² " . _______________________________________________________


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