document.write( "Question 952729: The area of rectangle is 48cm^2,find perimeter if length is 3 times the breadth? \n" ); document.write( "

Algebra.Com's Answer #581797 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( "The area of rectangle is $\"A=48cm%5E2\"$ ,
\n" ); document.write( "the length $\"L\"$ is $\"3\"$ times the breadth $\"W\"$ : => $\"L=3W\"$ \r
\n" ); document.write( "\n" ); document.write( "find perimeter $\"P\"$ :\r
\n" ); document.write( "\n" ); document.write( "use $\"A=48cm%5E2\"$ to find $\"W\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"L%2AW=48cm%5E2\"$ ........substitute $\"3W\"$ for $\"L\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3W%2AW=48cm%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"3W%5E2=48cm%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"W%5E2=48cm%5E2%2F3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"W%5E2=16cm%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"W=sqrt%2816cm%5E2%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28W=4cm%29\"$ \r
\n" ); document.write( "\n" ); document.write( "then, find $\"L\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"L=3W\"$ => $\"L=3%2A4cm\"$ => $\"highlight%28L=12cm%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"P=2%28L%2BW%29\"$ ...substitute $\"12cm\"$ for $\"L\"$ and $\"4cm\"$ for $\"W\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"P=2%2812cm%2B4cm%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"P=2%2816cm%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"highlight%28P=32cm%29\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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