Answer: C
Step-by-step explanation:
The formula for surface area of a cylinder is A=2πrh+2πr². Since we know the radius and height, we can directly plug it into this formula to find surface area.
A=2π(9)(12)+2π(9²)
A=2π(108)+2π(81)
A=216π+162π
A=378π
A=1186.92 units²
