document.write( "Question 440466: A perimeter of a rectangle is 8 meters and its area is 3.84 m. What are the dimensions? \n" ); document.write( "
Algebra.Com's Answer #304266 by edjones(8007)![]() ![]() You can put this solution on YOUR website! 2L+2w=P \n" ); document.write( "2L+2w=8 \n" ); document.write( "L+w=4 \n" ); document.write( "L=4-w \n" ); document.write( ". \n" ); document.write( "Lw=A \n" ); document.write( "Lw=3.84 \n" ); document.write( "w(4-w)=3.84 \n" ); document.write( "4w-w^2=3.84 \n" ); document.write( "w^2-4w=-3.84 multiply each side by -1. \n" ); document.write( "w^2-4w+4=4-3.84 completing the square. \n" ); document.write( "(w-2)^2=.16 \n" ); document.write( "w-2=+-.4 \n" ); document.write( "w=1.6m, L=2.4m \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |