An inverted pyramid-shaped tank with square cross section shown in the figure below is 10 ft...

 

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An inverted pyramid-shaped tank with square cross section shown in the figure below is 10 ft tall with 81 ft cross sectional area at the very top. +10 lb The tank is full up to the 7 ft mark with liquid of weight density 503 How much work (in ft-lb) is required to pump all of the liquid 3 ft above the top of the container? (Round your answer to the nearest integer.) ft-lb An inverted pyramid-shaped tank with square cross section shown in the figure below is 10 ft tall with 81 ft cross sectional area at the very top. +10 lb The tank is full up to the 7 ft mark with liquid of weight density 503 How much work (in ft-lb) is required to pump all of the liquid 3 ft above the top of the container? (Round your answer to the nearest integer.) ft-lb