document.write( "Question 266449: The width of a retangle is fixed at 15cm. What lengths will make the perimeter greater than 86cm? \n" ); document.write( "
Algebra.Com's Answer #195763 by drk(1908)![]() ![]() ![]() You can put this solution on YOUR website! The perimeter formula is \n" ); document.write( "P = 2L + 2W \n" ); document.write( "we know that we = 15, so we get \n" ); document.write( "P = 2L + 30. \n" ); document.write( "Now we want perimeter > 86, so we have \n" ); document.write( "86 < 2L + 30 \n" ); document.write( "subtracting, we get \n" ); document.write( "56 < 2L \n" ); document.write( "dividing, we get \n" ); document.write( "28 < L \n" ); document.write( " |