One side of square \(ABCD\) has a length of \(12\) meters. A certain rectangle whose area is equal to the area of \(ABCD\) has a width of 8 meters. What is the length, in meters, of the rectangle?

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The area of the square:

$$ A_{\text{square}} = s^2 $$ $$ = 12^2 = 144 $$

The area of the rectangle is equal to the square:

$$ A_{\text{rectangle}} = l\times w $$ $$ 144 = l(8) $$ $$ l = \boxed{18} $$