# SOLUTION: Word Problem: A cylindrical can is closed at both ends and its height is twice its radius. Express its surface area, S, as a function of its radius, r. [Hint: The surface area o

Algebra ->  Algebra  -> Surface-area -> SOLUTION: Word Problem: A cylindrical can is closed at both ends and its height is twice its radius. Express its surface area, S, as a function of its radius, r. [Hint: The surface area o      Log On

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 Click here to see ALL problems on Surface-area Question 394961: Word Problem: A cylindrical can is closed at both ends and its height is twice its radius. Express its surface area, S, as a function of its radius, r. [Hint: The surface area of a can consists of a rectangle plus two circular disks.] I guess I'm not sure what the answer they're asking for would be. I know that the surface area of the can would be S=2*pi*r^2+(2*pi*r)(h) but that's about as far as I know to go.Answer by Earlsdon(6287)   (Show Source): You can put this solution on YOUR website!You have done exactly what was asked! You have expressed S in terms of r. The right side could be simplified a bit.