SOLUTION: The formula for the surface area of a sphere is A=4nr2. A square sticker of side x if placed on a ball of radius 3x. What is the surface area of a sphere not covered by the sticker

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Question 307719: The formula for the surface area of a sphere is A=4nr2. A square sticker of side x if placed on a ball of radius 3x. What is the surface area of a sphere not covered by the sticker? We must answer in a factored form. Thank you.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The formula for the surface area of a sphere is A=4*pi*r^2.
A square sticker of side x if placed on a ball of radius 3x.
What is the surface area of a sphere not covered by the sticker?
We must answer in a factored form.
:
S.A = 4%2Api%2A%283x%29%5E2+-+x%5E2
:
S.A = 4%2Api%2A9x%5E2+-+x%5E2
:
S.A = 36%2Api%2Ax%5E2+-+x%5E2
:
S.A = x%5E2%2836%2Api+-+1%29