document.write( "Question 804461: The area of a rectangle is 36 square inches. The perimeter of the rectangle is 36 inches. What are the dimensions of the rectangle to the nearest hundredth of an inch? \n" ); document.write( "
Algebra.Com's Answer #484748 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! The area of a rectangle is 36 square inches. The perimeter of the rectangle is 36 inches. What are the dimensions of the rectangle to the nearest hundredth of an inch? \n" ); document.write( "------- \n" ); document.write( "Area:: L*W = 36 \n" ); document.write( "------- \n" ); document.write( "Perimeter:: 2(L+W) = 36 \n" ); document.write( "L + W = 18 \n" ); document.write( "=================== \n" ); document.write( "Substitute for \"L\" and solve for \"W\":: \n" ); document.write( "(18-W)W = 36 \n" ); document.write( "-W^2 + 18W = 36 \n" ); document.write( "W^2 - 18W + 36 = 0 \n" ); document.write( "-------- \n" ); document.write( "W = [18 +-sqrt(18^2-4*1*36)]/(2) \n" ); document.write( "----- \n" ); document.write( "W = [18+-sqrt(180)]/(2) \n" ); document.write( "----- \n" ); document.write( "W = (18+6sqrt(5))]/(2) \n" ); document.write( "W = 15.71 inches \n" ); document.write( "------ \n" ); document.write( "Solve for \"L\":: \n" ); document.write( "L + W = 18 \n" ); document.write( "L + 15.71 = 18 \n" ); document.write( "L = 2.29 inches \n" ); document.write( "================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "================= \n" ); document.write( " |