SOLUTION: The sureface are of a cube is 384 sq. inches. FInd the lenght of an edge. A. 24 B. 4 c. 8 D. 16

Algebra ->  Surface-area -> SOLUTION: The sureface are of a cube is 384 sq. inches. FInd the lenght of an edge. A. 24 B. 4 c. 8 D. 16      Log On


   

Question 750698: The sureface are of a cube is 384 sq. inches. FInd the lenght of an edge.
A. 24
B. 4
c. 8
D. 16
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The surface area of a cube is 384 sq. inches. FInd the length of an edge.
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The cube has 6 faces.
Each face has area = e^2
Surface area = 6*e^2 where e is the length of one edge.
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Solve:
6e^2 = 384
e^2 = 64
edge = 8 inches
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Cheers,
Stan H.
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A. 24
B. 4
c. 8
D. 16