Can someone please help me? If you cannot think of anwer, leave me alone aight?

I need somebody to explain why the surface area of the cylinder in the image is
351.86 square inches. Yes, i know the answer but still clueless how to solve for that. (There was a test and I got the answer wrong then it revealed the right answer)

Will mark brainliest if someone truly helps me.

Can someone please help me If you cannot think of anwer leave me alone aight I need somebody to explain why the surface area of the cylinder in the image is 351 class=