A cylindrical tank has a height 8 m and a radius 2 m. Suppose the water tank is halffull of water. Determine the work required to empty the tank by pumping the water to the top of the tank. Use 1000 kg/m3 for the density of water and 9.8 m/s2 for the acceleration due to gravity.

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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where’s the list ? the question is incomplete