A swimming pool has the shape of a box with a base that measures 25 m by 11 m and a uniform depth of 3.1 m. How much work is required to pump the water out of the pool when it is full? Use 1000 kg divided by m cubed for the density of water and 9.8 m divided by s squared for the acceleration due to gravity. Draw a y-axis in the vertical direction (parallel to gravity) and choose one corner of the bottom of the pool as the origin. For 0 less than or equals y less than or equals 3.1 , find the cross-sectional area A (y).
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