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    Question

    The circumference of the two circles is 120 cm and 428

    cm respectively. What is the difference between their radii?
    A 49cm Correct Answer Incorrect Answer
    B 36cm Correct Answer Incorrect Answer
    C 22cm Correct Answer Incorrect Answer
    D 12cm Correct Answer Incorrect Answer

    Solution

    Given, 2p (r1 – r2) = 428 – 120 2p (r1 – r2) = 308   (r1 – r2) =308/2×22/7 (r1 – r2) =49cm.

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