Please answer the following Work problems. Thanks!

(1 point) A chain 66 meters long whose mass is 29 kilograms is hanging over the edge of a tall building and does not touch the ground. How much work is required to lift the top 4 meters of the chain to the top of the building? Use that the acceleration due to gravity is 9.8 meters per second squared. Your answer must include the correct units. (1 point) A trough is 6 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of y = x4 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 [bf or lb*ft for ft-lb.)