document.write( "Question 902541: A livestock pen is built in the shape of a rectangle that is twice as long as it is wide. The perimeter is 48 feet. If the material used to build the pen is $1.25 per foot for the longer sides and $3.25 per foot for the shorter sides, find the cost to build the pen. \n" ); document.write( "
Algebra.Com's Answer #547381 by Stitch(470)![]() ![]() ![]() You can put this solution on YOUR website! The equation for the perimeter of a rectangle is P = 2L + 2W. \n" ); document.write( "Equation 1: \n" ); document.write( "Equation 2: \n" ); document.write( "Plug 2W into equation 1 for L. \n" ); document.write( " \n" ); document.write( "Multiply the 2 through. \n" ); document.write( " \n" ); document.write( "Combine like terms. \n" ); document.write( " \n" ); document.write( "Divide both sides by 6. \n" ); document.write( " \n" ); document.write( "Now plug 8 into equation 2 for W and solve for L. \n" ); document.write( "Equation 2: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "--------------------------- \n" ); document.write( "Now it is time to calculate the cost of the fence. \n" ); document.write( "The longer side costs $1.25/ft. \n" ); document.write( "Multiply $1.25/ft by the Length of 16ft. Multiply that by 2 because there are two sides of the rectangle. \n" ); document.write( "$1.25 * 16 * 2 = $40 for the long sides. \n" ); document.write( "--------------------------- \n" ); document.write( "The short side costs $3.25/ft. \n" ); document.write( "Multiply $3.25/ft by the Length of 8ft. Multiply that by 2 because there are two sides of the rectangle. \n" ); document.write( "$3.25 * 8 * 2 = $52 for the long sides. \n" ); document.write( "--------------------------- \n" ); document.write( "Now add the costs together. \n" ); document.write( "$40 + $52 = $92 \n" ); document.write( "It will cost $92 to build the pen. \n" ); document.write( " |