Question 1144647
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1.  Make a sketch.


2.  In the sketch, draw the segment from the center to the midpoint of the chord.


3.  The expression for the half of the chord y is  y = {{{sqrt(8^2 - x^2)}}} inches (Pythagorean theorem).


4.  You need the entire chord length, which is twice y, i.e.  {{{2*sqrt(8^2-x^2)}}}.


5.  It is your answer.
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