Answer:
Option C, 254.34 square feet
Explanation:
Area of a circle formula: A = πr^2
Step 1: Find the radius
Since they give us the diameter, we need to find the radius.
18/2
9 = radius
Step 2: Plug into the formula
A = π(9)^2
A = 81π
A = 254.34 square feet
Answer: Option C, 254.34 square feet