document.write( "Question 948416: the length of a rectangle is 6 times the width. the area is 864 square centimeters. what is the length and width of the rectangle \n" ); document.write( "

Algebra.Com's Answer #578892 by macston(5194) $\"\"$ $\"About$

You can put this solution on YOUR website!
Width=W; Length=L=6W; Area=A=L*W
\n" ); document.write( " $\"L%2AW=864+cm%5E2\"$ Substitute for L
\n" ); document.write( " $\"6W%2AW=864+cm%5E2\"$ Divide each side by 6
\n" ); document.write( " $\"W%5E2=144+cm%5E2\"$ Find the square root of each side
\n" ); document.write( " $\"W=12+cm\"$ ANSWER 1: The width is 12 cm.
\n" ); document.write( "L=6W=6(12 cm)=72 cm ANSWER 2: The length is 72 cm.
\n" ); document.write( "CHECK:
\n" ); document.write( "Area=L*W
\n" ); document.write( "864 sq cm=72 cm * 12 cm
\n" ); document.write( "864 sq cm=864 sq cm\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );