SOLUTION: Please help me solve this word problem!!! Surface Area of a Sphere. The surface area of a sphere with radius r is 4 pi r sqared. Write a polynomial that gives the surface area

Algebra ->  Surface-area -> SOLUTION: Please help me solve this word problem!!! Surface Area of a Sphere. The surface area of a sphere with radius r is 4 pi r sqared. Write a polynomial that gives the surface area       Log On


   



Question 420728: Please help me solve this word problem!!!
Surface Area of a Sphere. The surface area of a
sphere with radius r is 4 pi r sqared. Write a polynomial that
gives the surface area of a sphere with radius x + 2
Leave your answer in terms of pi. ???
This is what I came up with, but am not sure.
4(pi)(x + 2)squared
4pi (x sqrd. + 4)
4pixsqrd. + 16
not sure how to make the pi symbol or the squared symbol so spelled it out.
Any assistance would be greatly appreciated. :-}

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Surface Area of a Sphere. The surface area of a
sphere with radius r is 4 pi r sqared. Write a polynomial that
gives the surface area of a sphere with radius x + 2
Leave your answer in terms of pi. ???
This is what I came up with, but am not sure.
4(pi)(x + 2)squared
4pi (x sqrd. + 4)
4pixsqrd. + 16
----------------
Area+=+4%2Api%2Ar%5E2+=+4%2Api%2A%28x%2B2%29%5E2
= 4%2Api%2A%28x%5E2+%2B+4x+%2B+4%29