SOLUTION: Radius of a sphere is r.how many times does the area increases if radius is doubled?

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Question 409493: Radius of a sphere is r.how many times does the area increases if radius is doubled?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Radius of a sphere is r.how many times does the area increases if radius is doubled?
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Original Area: A = 4(pi)r^2
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New Area: a = 4pi(2r)^2 = 4pi(4r^2) = 4[4(pi)r^2]
The new Area is 4 times the original.
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Cheers,
Stan H.
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