Question

    The circumference of the two circles is 110 cm and 330 cm respectively. What is the difference between their radii?

    A 25m Correct Answer Incorrect Answer
    B 35m Correct Answer Incorrect Answer
    C 42m Correct Answer Incorrect Answer
    D 30m Correct Answer Incorrect Answer

    Solution

    2p (r1 – r2) = 330 – 110   = 220 ×7)/22×2 (r1 – r2) = 35 cm

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