- Choice BThe length of the rectangle is w + 12; the area is $$w\cdot l=140 \\$$ $$ \Rightarrow w\cdot (w+12)=140$$
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- Choice BThe length of the rectangle is w + 12; the area is $$w\cdot l=140 \\$$ $$ \Rightarrow w\cdot (w+12)=140$$
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