Answer:
radius = 5
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 centre and r is the radius
(x - 5)² + (y + 3)² = 25 ← is in standard form
with r² = 25 ⇒ r = [tex]\sqrt{25}[/tex] = 5
