None of the given answers are correct. To find the surface area you will find the areas of each circular base by using the formula for area of a circle.
To find the area of the circular height, you will find the circumference of the circle and multiply by the height.
SA = 2(pi x r^2) + pi x d x h
2 x pi x 3^2 + pi x 6 x 12
18pi + 72pi
SA = 90pi.
The surface area would be 90 pi square inches.
