document.write( "Question 492750: Please help me solve this problem, One side of rectangle is 1 meter less than the length of the diagonal.If the area is 60 meter squared, what are its dimensions? \n" ); document.write( "
Algebra.Com's Answer #335191 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! One side of rectangle is 1 meter less than the length of the diagonal. If the area is 60 meter squared, what are its dimensions? \n" ); document.write( ": \n" ); document.write( "Let L = the length of the rectangle \n" ); document.write( "Let W = the width of the rectangle \n" ); document.write( ": \n" ); document.write( "I says,\"the area is 60 meter squared,\", therefore: \n" ); document.write( "L * W = 60 \n" ); document.write( "then \n" ); document.write( "L = \n" ); document.write( ": \n" ); document.write( "\"One side of rectangle is 1 meter less than the length of the diagonal\" \n" ); document.write( "Diagonal = W + 1 \n" ); document.write( "Using pythag: \n" ); document.write( "W + 1 = \n" ); document.write( "Replace L with 60/W \n" ); document.write( "W + 1 = \n" ); document.write( "Square both sides \n" ); document.write( "(W+1)^2 = \n" ); document.write( "FOIL \n" ); document.write( "W^2 + 2W + 2 = \n" ); document.write( "W^2 - W^2 + 2W + 2 = \n" ); document.write( "2W + 2 = \n" ); document.write( "Multiply both sides by W^2 \n" ); document.write( "2W^3 + 2W^2 = 3600 \n" ); document.write( "2W^3 + 2W^2 - 3600 = 0 \n" ); document.write( "simplify, divide by 2 \n" ); document.write( "W^3 + W^2 - 1800 = 0 \n" ); document.write( ": \n" ); document.write( "Plot this equation on your graphing calc, should look like this: \n" ); document.write( " \n" ); document.write( "you can see W ~ 11.8 meters is the width \n" ); document.write( "and \n" ); document.write( "L = \n" ); document.write( "L ~ 5.1 meters is the length \n" ); document.write( "; \n" ); document.write( ": \n" ); document.write( "See if that checks out by finding the diagonal \n" ); document.write( "d = \n" ); document.write( "d = 12.85 which is about 1 inch longer than the width \n" ); document.write( " \n" ); document.write( " |