SOLUTION: The edge of a cube is increased by 50%. What is the ratio of its new surface area to its old?

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Question 319334: The edge of a cube is increased by 50%. What is the ratio of its new surface area to its old?
Answer by Alan3354(69443) About Me  (Show Source):
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The edge of a cube is increased by 50%. What is the ratio of its new surface area to its old?
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Surface area (of any solid or plane figure) is a function of the square of its linear dimensions.
1.5*side ---> 1.5^2 * area
= 2.25