Q22. What is the radius of the circle defined by the equation x2 + y2 + 2x - 4y + 11 = 0?Mathematics — NUST Mock By Dogers 3 — Question 22 of 200A. The equation does not represent a real circleB. 7C. 6D. 4Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →