document.write( "Question 626610: The ratio of the length and width is 4:5 of a rectangle. Find the dimensions if the area is 63 cm squared. \n" ); document.write( "
Algebra.Com's Answer #394312 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
The ratio of the length and width is 4:5 of a rectangle. Find the dimensions if the area is 63 cm squared.
\n" ); document.write( "**
\n" ); document.write( "let x=length
\n" ); document.write( "let y=width
\n" ); document.write( "area of a rectangle=length*width
\n" ); document.write( "..
\n" ); document.write( "x/y=4/5
\n" ); document.write( "y=5x/4
\n" ); document.write( "..
\n" ); document.write( "xy=63
\n" ); document.write( "x*5x/4=63
\n" ); document.write( "5x^2=252
\n" ); document.write( "x^2=252/5
\n" ); document.write( "x=√(252/5)
\n" ); document.write( "x≈7.1
\n" ); document.write( "y≈5x/4≈8.9
\n" ); document.write( "length≈7.1 cm
\n" ); document.write( "width≈8.9 cm \n" ); document.write( "
\n" );