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    Question

    If the area of a circle is 154 cm², then the

    circumference of the circle is:
    A 22 cm Correct Answer Incorrect Answer
    B 44 cm Correct Answer Incorrect Answer
    C 36 cm Correct Answer Incorrect Answer
    D 11 cm Correct Answer Incorrect Answer

    Solution

    Area of a circle = πr2 => 154 = 22/7 × r 2 => r 2 = 49 => r = 7 cm Therefore the circumference of the circle = 2πr = 2 × 22/7 × 7 = 44 cm

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