Answer:
326.56 in².
Explanation:
Mathematics: Define/explain.
SURFACE AREA: The measure of the total area that an object occupies.
The formula for finding the surface area for a cylinder is:



Mathematics: Solve.
According to the image, the cylinder has a height of 9 inches and a base radius of 4 inches.
Now, we can plug the numbers into the formula.

Mathematics: Conclude.
Therefore, the surface area of this cylinder is 356.56 in².