document.write( "Question 391536: a rectangle has a length that is twice its width. the perimeter of the rectangle is 420. find the length of the diagonal of the rectangle \n" ); document.write( "

Algebra.Com's Answer #277776 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,         
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document.write( "Hi,         
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document.write( "Let x AND 2x represent the width and length respecively
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document.write( "Question states;
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document.write( " 2(2x) + 2x = 420
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document.write( " 4x + 2x = 420
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document.write( "     6x = 420
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document.write( "      x = 70, the width.  Length is 140   (2*70)
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document.write( "Applying the Pythagorean theorem
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document.write( " 70^2 + 140^2 = d^2
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document.write( "        156.5248 is the length of the diagonal  \n" );
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