What is the radius of the circle given by the equation (x - 2)² + (y + 3)² = 16?
✓ Correct Answer: Option C
The standard equation of a circle is (x - h)² + (y - k)² = r², where r is the radius. In this equation, r² = 16, so the radius r = √16 = 4.
The standard equation of a circle is (x - h)² + (y - k)² = r², where r is the radius. In this equation, r² = 16, so the radius r = √16 = 4.