document.write( "Question 494347: The length of a rectangle is 3 cm greater
\n" );
document.write( "than its width.The perimeter is 24 cm. Find the
\n" );
document.write( "dimensions of the rectangle. \n" );
document.write( "
Algebra.Com's Answer #335681 by Maths68(1474)![]() ![]() You can put this solution on YOUR website! Given \n" ); document.write( "Length = l =W + 3 \n" ); document.write( "Perimeter = 24 \n" ); document.write( "Width = W = ?\r \n" ); document.write( "\n" ); document.write( "Perimeter of a rectangle = 2 length + 2 width \n" ); document.write( "P = 2*l + 2*w \n" ); document.write( "24=2*(w+3)+ 2w \n" ); document.write( "24=2w+6+2w \n" ); document.write( "24-6=4w \n" ); document.write( "18=4w \n" ); document.write( "w=18/4 \n" ); document.write( "w=9/2 \n" ); document.write( "w=4.5\r \n" ); document.write( "\n" ); document.write( "l=w+3 \n" ); document.write( "put the value of w in above equation \n" ); document.write( "l=4.5+3 \n" ); document.write( "l=7.5\r \n" ); document.write( "\n" ); document.write( "Dimensions of rectangle\r \n" ); document.write( "\n" ); document.write( "length = 7.5cm, width=4.5cm, Perimeter=24cm, \n" ); document.write( "Area of rectangle =w*l=7.5*4.5=33.75cm^2 \n" ); document.write( " \n" ); document.write( " |