(1 point) A trough is 9 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the
graph of y=x from x = -1 to x = 1. The trough is full of water. Find the amount of work required to empty the trough by
pumping the water over the top. Note: The weight of water is 62 pounds per cubic foot. Your answer must include the correct
units. (You may enter lbf or lb ft for ft-lb.)
Work =
