document.write( "Question 164304: A rectangle has a length that is 6ft more than the width.Its perimeter is 100 ft. What is the area? \n" ); document.write( "
Algebra.Com's Answer #121049 by algebrapro18(249) ![]() You can put this solution on YOUR website! A rectangle has a length that is 6ft more than the width.Its perimeter is 100 ft. What is the area?\r \n" ); document.write( "\n" ); document.write( "l = 6+w \n" ); document.write( "l+w = 100\r \n" ); document.write( "\n" ); document.write( "now substituting l into the second equation \n" ); document.write( "l + w = 100 \n" ); document.write( "(6+w) + w = 100 \n" ); document.write( "6 + 2w = 100 \n" ); document.write( "2w = 94 \n" ); document.write( "w = 47\r \n" ); document.write( "\n" ); document.write( "now substituting back into the first equation \n" ); document.write( "l = 6 + w \n" ); document.write( "l = 6 + 47 \n" ); document.write( "l = 53\r \n" ); document.write( "\n" ); document.write( "so now we know what the length and with are and we can find the Area of a rectangle using the formula A = lw. I will leave this for you to do. \n" ); document.write( " |