The perimeter ot a rectangular field is \( 82 \mathrm{~m} \) and its area is \( 400 \mathrm{~m}^...

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The perimeter ot a rectangular field is \( 82 \mathrm{~m} \) and its area is \( 400 \mathrm{~m}^{2} \). Find the bread th of the rectangle
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