Posted by **arnulfo** on Friday, October 26, 2012 at 9:25pm.

a cattle trough has a trapezoidal cross section with a height of 1 m and horizontal sides of width 1/2 m and 1 m assume the length of the trough is 10 m. A. how much work is required to pump out the water in the trough? B. if the length is doubled does the amount of work needed double? explain.

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