A rectangular tank, open to the atmosphere, is filled with water to a depth of \(2.5 \mathrm{~m}\) as shown. A U-tube manometer is connected to the tank at a location \(0.7 \mathrm{~m}\) above the tank bottom. If the zero level of the Meriam blue manometer fluid is \(0.2 \mathrm{~m}\) below the connection, determine the deflection \(l\) after the manometer is connected and all air has been removed from the connecting leg.

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Zero level 3 m 2.5 m 0.2 m 0.7 m P3.25