general math MCQ #1089

If the radius of a circle is increased to 3 times, then how many times will it's circumference be increased?

general math MCQ #1089

  1. Question 1

    Q1. If the radius of a circle is increased to 3 times, then how many times will it's circumference be increased?

    • A) 2 times
    • B) 3 times
    • C) 1/3 times
    • D) 9 times

    Answer: 3 times

    Explanation: Circumference C = 2πr; if radius triples to 3r, new circumference = 2π(3r) = 3 × 2πr, which is 3 times the original.