document.write( "Question 330495: If the lengths of a pair of opposite sides of a rectangle were doubled and the other pair of opposite sides were each decreased by 14 m, the new rectangle would be a square with a perimeter of 84 m. Find the rectangle's original dimensions. ........ \n" ); document.write( "
Algebra.Com's Answer #237176 by privani(34)\"\" \"About 
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Understood from question:
\n" ); document.write( "Square's perimeter = 84m, with sides \"s\"
\n" ); document.write( "Hence,
\n" ); document.write( "4s = 84
\n" ); document.write( "s = 84/4
\n" ); document.write( "s = 21\r
\n" ); document.write( "\n" ); document.write( "Further from question:
\n" ); document.write( "\"a pair of opposite sides of a rectangle were doubled\"; assuming this side is \"x\"
\n" ); document.write( "2x = 21
\n" ); document.write( "x = 21/2
\n" ); document.write( "x = 10.5\r
\n" ); document.write( "\n" ); document.write( "\"the other pair of opposite sides were each decreased by 14 m\"; assuming the other side is \"y\"
\n" ); document.write( "y - 14 = 21
\n" ); document.write( "y = 21 + 14
\n" ); document.write( "y = 35\r
\n" ); document.write( "\n" ); document.write( "So, the rectangle's original dimension is 10.5 m x 35 m.
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