SOLUTION: The radius of a sphere is increased 50%.The increase in the surface area of sphere is?

Question 711052: The radius of a sphere is increased 50%.The increase in the surface area of sphere is?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
The radius of a sphere is increased 50%.The increase in the surface area of sphere is?
surface area of sphere=4πr^2
Surface area increases as the square of the radius.
For example, if you double the radius, the surface area increases 2^2=4 times
If you increase the area by 50%, the surface area increases (1.5)^2=2.25 times
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