Step 1: Write out the formula
[tex]\begin{gathered} \text{TSA = }2\pi r(r+h) \\ \text{Where,} \\ \text{TSA = the total surface area} \\ r=\text{ the radius} \\ h=\text{ the height of the cylinder} \end{gathered}[/tex]Step 2: Write out the values and substitute them into the formula
[tex]r=2ft,h=4ft[/tex]Therefore,
[tex]\text{TSA = 2}\pi(2)(2+4)=4\pi\times6=24\pi=75.4ft^2[/tex]