SOLUTION: The surface area of a cube is 864 square units. What is the length of a lateral edge of the cube?

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Question 39481This question is from textbook Glencoe Geometry
: The surface area of a cube is 864 square units. What is the length of a lateral edge of the cube? This question is from textbook Glencoe Geometry

Found 2 solutions by checkley71, josmiceli:
Answer by checkley71(8403) About Me  (Show Source):
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A CUBE HAS 6 SQUARE SURFACES THUS 6X~2=864 OR X~2=684/6 OR X~2=144 OR X=12

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
There are 6 faces
6*x^2 = 864
x^2 = 144
x = 12