document.write( "Question 20508: The length of a rectangle playing field is 5ft. less than twice its width. If the perimeter of the playing field is 230 ft, find the length and width of the field. \n" ); document.write( "
Algebra.Com's Answer #9858 by suresh(20)![]() ![]() ![]() You can put this solution on YOUR website! Perimeter of the rectangle is = 2 ( l + b ) ,where l is the length and b is the breath of the rectangle.\r \n" ); document.write( "\n" ); document.write( "Let b be the width of the rectangle.\r \n" ); document.write( "\n" ); document.write( "Given, l = 2 b - 5.\r \n" ); document.write( "\n" ); document.write( "Also perimeter = 230 ft.\r \n" ); document.write( "\n" ); document.write( "Therefore, 2 (2b - 5 + b ) = 230\r \n" ); document.write( "\n" ); document.write( "2 ( 3b - 5) = 230\r \n" ); document.write( "\n" ); document.write( "6b-10=230\r \n" ); document.write( "\n" ); document.write( "6b=240 \n" ); document.write( "b=40.\r \n" ); document.write( "\n" ); document.write( "l=2(40)-5=80-5=75.\r \n" ); document.write( "\n" ); document.write( "Hence, l = 75 and b= 40\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |