Answer:
r = 4
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the circle and r is the radius
(x - 2)² + y² = 16 ← is in standard form
with
r² = 16 ( take square root of both sides )
r = [tex]\sqrt{16}[/tex] = 4
