engineering intelligence MCQ #189

If the radius of a circle is doubled, what happens to its area?

engineering intelligence MCQ #189

  1. Question 1

    Q1. If the radius of a circle is doubled, what happens to its area?

    • A) It doubles
    • B) It quadruples
    • C) It stays the same
    • D) It halves

    Answer: It quadruples

    Explanation: Area = πr². If r is doubled, the new area = π(2r)² = 4πr², so it quadruples.