engineering mathematics MCQ #1863

The radius of the circle x² + y² + 2x + 4y + 4 = 0 is

engineering mathematics MCQ #1863

  1. Question 1

    Q1. The radius of the circle x² + y² + 2x + 4y + 4 = 0 is

    • A) 1
    • B) 2
    • C) 3
    • D) 1/2

    Answer: 1

    Explanation: Completing the square gives (x + 1)² + (y + 2)² = 1, so the radius is √1 = 1.