document.write( "Question 892122: the sides of rectangle are in the ratio 5 4 and its perimeter is 90cm. find its length and breadth \n" ); document.write( "

Algebra.Com's Answer #540313 by Fombitz(32388) $\"\"$ $\"About$

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$\"L%2FW=5%2F4\"$
\n" ); document.write( " $\"L=%285%2F4%29W\"$
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( " $\"2%28L%2BW%29=90\"$
\n" ); document.write( " $\"L%2BW=45\"$
\n" ); document.write( "Substituting,
\n" ); document.write( " $\"%285%2F4%29W%2BW=45\"$
\n" ); document.write( " $\"%285%2F4%2B4%2F4%29W=45\"$
\n" ); document.write( " $\"%289%2F4%29W=45\"$
\n" ); document.write( " $\"W=%284%2F9%2945\"$
\n" ); document.write( " $\"W=20\"$
\n" ); document.write( "Then,
\n" ); document.write( " $\"L=%285%2F4%2920\"$
\n" ); document.write( " $\"L=25\"$
\n" ); document.write( " \n" ); document.write( "

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