SOLUTION: if i double the radius does the inside area increase?

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Question 494666: if i double the radius does the inside area increase?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
if i double the radius does the inside area increase?
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Area before doubling the radius = (pi)r^2
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Area after doubling the radius = (pi)(2r)^2 = 4(pi)r^2
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Ans: If radius is doubled the area is multiplied by 4.
Cheers,
Stan H.
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