SOLUTION: A painter is calculating how much paint he will need to cover a cylindrical goal roller (including both ends of the roller) the roller is 10 inches long and has an diameter of 4 in

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Question 1141749: A painter is calculating how much paint he will need to cover a cylindrical goal roller (including both ends of the roller) the roller is 10 inches long and has an diameter of 4 inches, what’s the surface area of the foam roller?
A) 40 π
B) 48 π
C) 64 π
D) 96 π

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
For the cylinder alone:
+A%5B1%5D+=+pi%2A2%5E2%2A10+
+A%5B1%5D+=+40pi+
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For the 2 ends:
+A%5B2%5D+=+2%2Api%2A2%5E2+
+A%5B2%5D+=+8pi+
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+A%5B1%5D+%2B+A%5B2%5D+=+48pi+
The answer is B)