Answer:
Your answer should be A.
Explanation:
To begin, you must acknowledge the formula for the SA or Surface Area of a Cylinder. Which is: 2πrh+2πr2
Now, we plug it in!
2π4×10 + 2π16
How do I know this?
Your radius if 4, since it's half of the cylinder. Since the second part calls for your radius squared, you must do 4x4.