document.write( "Question 1168447: if the length of the rectangle is 4 more than three times the width and the area is equal to 39^2. find the dimension of the rectangle \n" ); document.write( "
Algebra.Com's Answer #793027 by dkppathak(439)\"\" \"About 
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if the length of the rectangle is 4 more than three times the width and the area is equal to 39^2. find the dimension of the rectangle
\n" ); document.write( "solution
\n" ); document.write( "Let width is x mtrs than length =3x+4
\n" ); document.write( "area= lengthx width
\n" ); document.write( "39=x(3x+4)
\n" ); document.write( "3x^2+4x-39=0
\n" ); document.write( "3x^2+13x-9x-39=0
\n" ); document.write( "(3x+13)(x-3)=0
\n" ); document.write( "x=3 or x=-13/3 rejecting negative value of x therefore x=3 means width is 3 mtrs and length will be 13 mtrs
\n" ); document.write( "answer Length=13 mtrs
\n" ); document.write( " width=3 mtrs
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