SOLUTION: If a cube has a total surface area of 486 square feet, then it is ??? feet on each edge.
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Question 249963: If a cube has a total surface area of 486 square feet, then it is ??? feet on each edge.
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
A square has 6 equal square surfaces.
6x^2=486
x^2=486/6
x^2=81
x=sqrt81
x=9 ft on a side.
Proof:
6*9^2=486
6*81=486
486=486
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