engineering mathematics MCQ #568

The radius of the circle x² + y² - 4x + 6y - 12 = 0 is:

engineering mathematics MCQ #568

  1. Question 1

    Q1. The radius of the circle x² + y² - 4x + 6y - 12 = 0 is:

    • A) 5
    • B) 6
    • C) 7
    • D) 8

    Answer: 5

    Explanation: Complete the square: (x - 2)² + (y + 3)² = 25 → r = 5.