SOLUTION: What happens to the surface area of a sphere when the radius is halved?

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Question 204897: What happens to the surface area of a sphere when the radius is halved?

Answer by Alan3354(69443) About Me  (Show Source):
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What happens to the surface area of a sphere when the radius is halved?
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Area = 4*pi*r^2
(r/2)^2 = r/4, so the Area is 1/4.
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To put it more generally, the Area is proportional to the square of the radius. A change in the radius causes the Area to change by the square of the ratio.