please help ASAP in this geometry IXL

Answer:
The radius is 4 feet
Step-by-step explanation:
Area of a circle formula: A = π * r^2
Step 1: 16π = π * r^2
16π / π = π * r^2 / π
[tex]\sqrt{16}[/tex] = [tex]\sqrt{r^2}[/tex]
4 = r
Answer: The radius is 4 feet