Which expression can be used to find the surface area of the following triangular prism?

When y’all answer can y’all explain too !

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x