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    Question

    In a circle of radius 17 cm, a chord is at a distance 8

    cm from the centre. The length of the chord is:
    A 30 cm Correct Answer Incorrect Answer
    B 42 cm Correct Answer Incorrect Answer
    C 60 cm Correct Answer Incorrect Answer
    D 22 cm Correct Answer Incorrect Answer

    Solution

    Perpendicular from centre to chord bisects the chord. Let half of the chord = x Then, x^2 + 8^2 = 17^2 x^2 + 64 = 289 x^2 = 225 x = 15 So chord length = 2x = 30 cm

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