engineering mathematics MCQ #375

The equation x² + y² - 6x + 4y + 13 = 0 represents a circle. What is its radius?

engineering mathematics MCQ #375

  1. Question 1

    Q1. The equation x² + y² - 6x + 4y + 13 = 0 represents a circle. What is its radius?

    • A) 2
    • B) 3
    • C) √(5)
    • D) √(13)

    Answer: √(5)

    Explanation: Complete squares: (x-3)² + (y+2)² = 2. Radius = √2.