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March 28, 2017

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A diameter of a circle is 32 yards long. A chord is 11 yards from the center. How long is the chord?

  • Geometry - ,

    diameter = 32
    r = 16

    Let the length of the chord be 2x.
    Join one end of the chord to the centre.
    You now a right-angled triangle with hypotenuse of r, one leg as 11 and the other leg as x

    x^2 + 11^2 = (16)^2
    x^2 = 135
    x = √135

    so the chord has length 2√135 or 23.24 yards

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