document.write( "Question 1144647: SOLUTION: express the length l of a chord of a circle of radius 8 in. as a function of its distance x in. from the center of the circle, and determine the domain of the function \n" ); document.write( "
Algebra.Com's Answer #765827 by ikleyn(52805)\"\" \"About 
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document.write( "1.  Make a sketch.\r\n" );
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document.write( "2.  In the sketch, draw the segment from the center to the midpoint of the chord.\r\n" );
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document.write( "3.  The expression for the half of the chord y is  y = \"sqrt%288%5E2+-+x%5E2%29\" inches (Pythagorean theorem).\r\n" );
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document.write( "4.  You need the entire chord length, which is twice y, i.e.  \"2%2Asqrt%288%5E2-x%5E2%29\".\r\n" );
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document.write( "5.  It is your answer.\r\n" );
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