Question

    If the radius of a circle becomes 15 times, then how

    much of its circumference will be the previous perimeter?
    A 15 Correct Answer Incorrect Answer
    B 16 Correct Answer Incorrect Answer
    C 17 Correct Answer Incorrect Answer
    D 14 Correct Answer Incorrect Answer

    Solution

    Let the radius of the circle be r cm. Circumference of the circle = 2πr New radius of the circle = 15r New circumference of the circle = 2 π × 15r = 15 × 2πr New circumference will be 15 times of its original circumference.

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