document.write( "Question 252930: the length of a rectangle is 3 times its width. if the area of a rectangle is 147 cm sq. what is the perimeter \n" ); document.write( "

Algebra.Com's Answer #185069 by drk(1908) $\"\"$ $\"About$

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First a couple of formulas:
\n" ); document.write( " $\"A+=+LW\"$
\n" ); document.write( " $\"P+=+2L+%2B+2W\"$
\n" ); document.write( "the length of a rectangle is 3 times its width translates to
\n" ); document.write( " $\"L+=+3W\"$
\n" ); document.write( "we are given A = 147.
\n" ); document.write( " $\"+147+=+3W%2AW\"$
\n" ); document.write( " $\"147+=+3W%5E2\"$
\n" ); document.write( " $\"49+=+W%5E2\"$
\n" ); document.write( "W = 9 cm.
\n" ); document.write( "L = 27 cm.
\n" ); document.write( "P = 2(9) + 2(27) = 18 + 54 = 72 cm.\r
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