document.write( "Question 101528: The length of a rectangle is
\n" ); document.write( "1 cm longer than the width. \r
\n" ); document.write( "\n" ); document.write( "If the DIAGONAL of the rectangle is 4 cm, \r
\n" ); document.write( "\n" ); document.write( "what are the dimensions
\n" ); document.write( "(of the length and width)
\n" ); document.write( "of the rectangle??\r
\n" ); document.write( "\n" ); document.write( "I can get my answer of
\n" ); document.write( "2.284 cm and 3.284 cm \r
\n" ); document.write( "\n" ); document.write( "but...\r
\n" ); document.write( "\n" ); document.write( "I need to show step by step how I got my answer,
\n" ); document.write( "this is where I keep writing it out wrong.
\n" ); document.write( "Please help...
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Algebra.Com's Answer #73919 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
Let say that:
\n" ); document.write( "Length=a
\n" ); document.write( "Width=b
\n" ); document.write( "DIAGONAL=d\r
\n" ); document.write( "\n" ); document.write( "Given:
\n" ); document.write( "a=b+1cm
\n" ); document.write( "d=4cm\r
\n" ); document.write( "\n" ); document.write( "you have to use Pythagorean theorem
\n" ); document.write( "\"a%5E2+%2B+b%5E2+=+d%5E2\"
\n" ); document.write( "\"%28b%2B1cm%29%5E2+%2B+b%5E2+=+4%5E2\"
\n" ); document.write( "\"b%5E2+%2B+2b%2B1+%2B+b%5E2=+16\"
\n" ); document.write( "\"2b%5E2+%2B2b-16%2B1+=+0\"
\n" ); document.write( "\"2b%5E2+%2B2b-15+=+0\"
\n" ); document.write( "\"2b%5E2+%2B2b-15+=0+\" (now we can divide this by 2)\r
\n" ); document.write( "\n" ); document.write( "\"b%5E2+%2Bb-15%2F2+=0+\"
\n" ); document.write( "use quadratic formula
\n" ); document.write( "\"x=-b+%2B-+sqrt+%28b%5E2+-4%2Aa%2Ac+%29%29+%2F+%282%2Aa%29\" where \"b=x1\" and \"x1%3E0\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "or do it this way:\r
\n" ); document.write( "\n" ); document.write( "\"b%5E2+%2Bb-15%2F2+=0+\"
\n" ); document.write( "\"b%5E2+%2B+b+=+15%2F2\"
\n" ); document.write( "\"b%5E+2+%2B+b+%2B1%2F4+-1%2F4=15%2F2\"
\n" ); document.write( "\"b%5E+2+%2B+b+%2B1%2F4+=1%2F4+%2B15%2F2+\" \r
\n" ); document.write( "\n" ); document.write( "\"%28b%2B+1%2F2%29%5E2+=+1%2F4+%2B15%2F2++\"
\n" ); document.write( "\"%28b%2B+1%2F2%29%5E2+=++31%2F4\"\r
\n" ); document.write( "\n" ); document.write( "\"b%2B1%2F2\"= + - \"sqrt+%2831%2F4+%29\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"b\"=+-\"sqrt%2831%2F4%29\" -\"+1%2F2\"
\n" ); document.write( "since the length is positive, we will use only +sqrt31/4 which is 2.784
\n" ); document.write( "then
\n" ); document.write( "\"b+=2.784%961%2F2\"
\n" ); document.write( "\"b+=2.284+\" then \"a+=2.284+%2B1=3.284\"\r
\n" ); document.write( "\n" ); document.write( "check:
\n" ); document.write( "\"a%5E2+%2B+b%5E2+=+d%5E2\"
\n" ); document.write( "\"3.284%5E2+%2B2.284%5E2+=4%5E2\"
\n" ); document.write( "\"10.779+%2B+5.217++=16\"
\n" ); document.write( "\"15.996+\"is approximately \"16\"\r
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