C. 33π in^2
Here is why:
The formula for the surface area of a cone is:
[tex]SA=\pi r^2+\pi rl[/tex]
We can plug in the numbers from the picture, but we will keep π and not put it as 3.14, since the answer choices are in π.
[tex]SA=(\pi *3*3)+(\pi *3*8)[/tex]
[tex]SA=9\pi +24\pi[/tex]
SA = 33π
Answer is:
33π in^2
