Please do help me please, i badly need it right now. This is a Calculus topic and i need the letter of the correct answer and also the complete solution. Please, i need a clear and correct answers. I promise to give a perfect feedback/rating back to you.

1) A rectangular sheet of tin 8ft x 12ft is submerged in a tank of water at a depth of 10ft. If P 1b/ft is the pressure exerted by the water at a point on the upper face of the sheet of tin. Find the force on the upper face of the sheet of tin. a. 75, 000 lb b. 60, 000 lb c. 70,000 lb d. 55,000 lb2) A trough having a trapezoidal cross section is full of water. If the trapezoid is 3 ft wide at the top, 2 ft wide at the bottom and 2 ft deep, find the total force owing to the water pressure on one end of the trough. a. 592 1b b. 392 1b c. 222 1b d. 292 1b Solution:3) Find the volume of the solid generated by revolving about the line x=- 4 and the region bounded by the two parabolas x = y- y and x = y2-3? a. 578at/32 cu.units b. 878/32 cu.units c. 778 /32 cu.units d. 875/32 cu.units Sketch the graph: Solution:4) Find the volume of the solid generated by revolving about the x axis the region bounded by the parabola y=x2+1 and the line y=x+3. a. 1871/5 cu.units b. 181x/5 cu.units c. 117x/5 cu.units d. 717 /5 cu.units Sketch the graph Solution:5. An oil in the tank is in the shape of right circular cylinder with a radius of r meters, and its axis is horizontal. If the tank if is half full of oil having mass density 750 kg/m', find r if the total force on one end of the tank due to liquid pressure is 80,000 N? a. 2.65m b. 2.55m c. 2.44 m d. 2.54 m Solution:6. A right circular cylindrical tank with a depth of 10m and a radius of 5m is half filled with water. Find the work necessary to pump the water to the top of the tank. a. 9,196,865x 1b.ft b. 9,186,875x 1b.ft c. 9,196,875x 1b.ft d. 9,196,775x 1b.ft