document.write( "Question 751826: the perimeter of a square is thrice the perimeter of a rectangle. if the perimeter of the square is 84 cm and the length of the rectangle is 8 cm, what is the difference between the breadth of the rectangle and side of the square? \n" ); document.write( "
Algebra.Com's Answer #457428 by Cromlix(4381)\"\" \"About 
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The side of the square = 84/4 = 21cm
\n" ); document.write( "The perimeter of the rectangle = 84/3 = 28cm
\n" ); document.write( "Perimeter = 2 lengths + 2 breadths
\n" ); document.write( " 2 lengths + 2 breadths = 28 cm
\n" ); document.write( " 2 x 8 cm + 2 breadths = 28 cm
\n" ); document.write( " 2 breadths = 28 cm - 16
\n" ); document.write( " breadth = 6 cm\r
\n" ); document.write( "\n" ); document.write( "Therefore difference between the breadth of the
\n" ); document.write( "rectangle and the side of the square is:\r
\n" ); document.write( "\n" ); document.write( " 21cms - 6cms = 15 cms
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