3. A cylindrical tank with a length of 10m and a radius of 5m is laying on its side and is half-full of queso. How much work is required to empty the tank through an outlet at the top? The density of queso is 1200 kilograms per cubic meter. 4. A large vertical dam in the shape of a symmetric trapezoid has a height of 30111, a Width of 20111 at its base, and a width of 40m at the top. What is the total force on the face of the dam when it is full of water? 5. A water trough has ends that are isosceles triangles. The trough is 10 meters long; the triangles are pointed downwards and have a length of 3 meters and a height of 5 meters. a. When the trough is lled with water, what is the force exerted on one of the faces of the trough