document.write( "Question 177185: The length of a rectangle is twice its width. If the perimeter of the rectangle is 30ft, find its area \n" ); document.write( "
Algebra.Com's Answer #132227 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The length of a rectangle is twice its width. If the perimeter of the rectangle is 30ft, find its area \n" ); document.write( "--------------------------------- \n" ); document.write( "Perimeter = 2(L+W) = 30 \n" ); document.write( "L + W= 15 \n" ); document.write( "-------------------------- \n" ); document.write( "But L = 2W, so substitute to get: \n" ); document.write( "2W + W = 15 \n" ); document.write( "3W = 15 \n" ); document.write( "W = 5 \n" ); document.write( "L = 2W = 10 \n" ); document.write( "----------------------- \n" ); document.write( "Area = LW = 10*5 = 50 sq. ft. \n" ); document.write( "================================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |