document.write( "Question 530879: : the length of a rectangle is 8 cm more than 3 times its width. the perimeter of the rectange is 64 cm. what are the dimension of the rectangle . show work. what is the area of the rectangle . show work? \n" ); document.write( "

Algebra.Com's Answer #350236 by oberobic(2304) $\"\"$ $\"About$

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L = 3*W + 8
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\n" ); document.write( "2(L+W) = 64
\n" ); document.write( "L+W = 32
\n" ); document.write( "so
\n" ); document.write( "L = 32-W
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\n" ); document.write( "L = L
\n" ); document.write( "so
\n" ); document.write( "3W+8 = 32-W
\n" ); document.write( "4W = 24
\n" ); document.write( "W = 6 cm
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\n" ); document.write( "L = 3W + 8 = 18+8 = 26 cm
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\n" ); document.write( "Check the perimeter.
\n" ); document.write( "2(L+W) = 64 ??
\n" ); document.write( "2(26+6) = 2*32 = 64
\n" ); document.write( "Correct.
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\n" ); document.write( "Re-read the question to make sure you answer it.
\n" ); document.write( "In this case, it is asking for the area, not the length and width.
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\n" ); document.write( "Area = L * W
\n" ); document.write( "Area = 26 * 6 = 156 cm^2
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\n" ); document.write( "Done.
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