engineering mathematics MCQ #512

Find radius of circle with equation x² + y² - 6x + 4y + 4 = 0.

engineering mathematics MCQ #512

  1. Question 1

    Q1. Find radius of circle with equation x² + y² - 6x + 4y + 4 = 0.

    • A) √(9 + 4)
    • B) √(9 + 4 - 4)
    • C) √(9 + 4 + 4)
    • D) √(9 - 4)

    Answer: √(9 + 4 - 4)

    Explanation: Complete square: (x-3)² + (y+2)² = 9 + 4 - 4 = 9 → radius 3.