document.write( "Question 1087174: A chord 30cm long is 20cm from the centre of a circle. Calculate the length of a chord which is 24cm from the centre \n" ); document.write( "

Algebra.Com's Answer #701478 by ikleyn(52781) $\"\"$ $\"About$

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document.write( "0.  First make a sketch.\r\n" );
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document.write( "    Find two right-angled triangles in the sketch.\r\n" );
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document.write( "    Then apply the Pythagorean theorem to these triangles.\r\n" );
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document.write( "1.  Find the radius of the circle from the first condition:\r\n" );
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document.write( "    R =  =  =  =  = 25 cm.\r\n" );
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document.write( "2.  Then calculate the length L of the another chord:\r\n" );
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document.write( "     =  =  =  =  = 7 cm.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Answer. L = 2*7 = 14 cm.\r
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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