SOLUTION: The perimeter of one face of a cube is 20 cm. What is the surface area?

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Question 900787: The perimeter of one face of a cube is 20 cm. What is the surface area?
Answer by Jc0110(165) About Me  (Show Source):
You can put this solution on YOUR website!
A cube has 4 equal sides.
Let x to be one side of the cube.
Since a cube has 4 equal sides, so 4x=20cm.
4x=20cm
x=20%2F4
x=5cm
Area of cube = length x width
Area of cube = 5 x 5
Area of cube = 25+cm%5E2