document.write( "Question 480848: The length of a rectangular garden is 12 m more than its breadth . The numerical value of its area is equal to 4 times the numerical value of its perimeter. Find the dimensions of the garden. \n" ); document.write( "
Algebra.Com's Answer #329273 by mathstutor494(120)![]() ![]() You can put this solution on YOUR website! Let width of a rectangular garden be \"x\" m\r \n" ); document.write( "\n" ); document.write( "Therefore length of a rectangular garden : x+12 m\r \n" ); document.write( "\n" ); document.write( "Area of the garden : x*(x+12)...................(1)\r \n" ); document.write( "\n" ); document.write( "Perimeter of the garden = 2*(Length+width) \n" ); document.write( "2*(x+x+12) \n" ); document.write( "4x+24............................................(2)\r \n" ); document.write( "\n" ); document.write( "Further numerical value of its area is equal to 4 times the numerical value of its perimeter, therefore equating (1) with 4 times of (2)results in \n" ); document.write( "x*(x+12) = 4*(4x+24) \n" ); document.write( "x^2+12x = 16x+96 \n" ); document.write( "x^2+12x-16x-96=0 \n" ); document.write( "x^2-4x-96=0 \n" ); document.write( "x^2-12x+8x-96=0 \n" ); document.write( "x(x-12)+8(x-12)=0 \n" ); document.write( "(x+8)(x-12)=0 \n" ); document.write( "So x=12 or -8\r \n" ); document.write( "\n" ); document.write( "Ans : \n" ); document.write( "Width 12m, Lenth 24m\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |