how much is the total area surface that needs covered?

The Solution:
Given:
Required:
To find the total surface area of the cylinder.
[tex]TSA=2\pi rh+2\pi r^2=2\pi r(h+r)[/tex]In this case:
[tex]\begin{gathered} r=\frac{12}{2}=6ft \\ h=26ft \end{gathered}[/tex]Substituting these values, we get:
[tex]TSA=(2\times\pi\times6)(26+6)=1206.3716\approx1206.37ft^2[/tex]Therefore, the correct answer is 1206.37 square feet.