document.write( "Question 734301: In a right triangle angle B is 90 degrees and side AB is 1 cm longer than side BC. If the perimeter of the triangle is 70 cm.Find the length.
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Algebra.Com's Answer #448867 by MathLover1(20855)\"\" \"About 
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\n" ); document.write( "length \"AB\": \"x+%2B+1cm\"
\n" ); document.write( "length \"BC\": \"xcm\"
\n" ); document.write( "length \"AC\": \"sqrt%28x%5E2+%2B+%28x%2B1%29%5E2%29cm\"\r
\n" ); document.write( "\n" ); document.write( "It follows that: given perimeter \"70cm\", then\r
\n" ); document.write( "\n" ); document.write( "\"x+%2B+%28x%2B1%29+%2B+sqrt%282%2Ax%5E2+%2B+2x+%2B+1%29+=+70\"\r
\n" ); document.write( "\n" ); document.write( "\"69+-+2x+=+sqrt%282%2Ax%5E2+%2B+2x+%2B+1%29\"\r
\n" ); document.write( "\n" ); document.write( "\"4x%5E2+-276x+%2B+69%5E2+=+2x%5E2+%2B+2x+%2B+1\"\r
\n" ); document.write( "\n" ); document.write( "\"2x%5E2+-+278x+%2B+4760+=+0\"...factor\r
\n" ); document.write( "\n" ); document.write( "\"%28x-119%29%28x-20%29+=+0\"\r
\n" ); document.write( "\n" ); document.write( "solutions:\r
\n" ); document.write( "\n" ); document.write( "If \"%28x-119%29=0\", then \"x+=+119\", and it is not a solution for \"x+%2B+%28x%2B1%29+%2B+sqrt%282%2Ax%5E2+%2B+2x+%2B+1%29+=+70\" because \"+x\" must be less than \"P=70+cm\".\r
\n" ); document.write( "\n" ); document.write( "If \"%28x-20%29=0\", then \"x+=+20\".
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\n" ); document.write( "Hence, \"x+=+20+cm\".\r
\n" ); document.write( "\n" ); document.write( "so,\r
\n" ); document.write( "\n" ); document.write( "length \"BC\": \"20cm\"
\n" ); document.write( "length \"AB\": \"21cm\"
\n" ); document.write( "length \"AC\": \"29cm\"\r
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