Please assist with the following problems

For the following exercises, use shells to find the volumes of the given solids. Note that the rotated regions lie between the curve and the x-axis and are rotated around the y-axis. 120. y= 1- x , x = 0, and x = 1 For the following exercises, find the mass of the two- dimensional object that is centered at the origin. 230. A frisbee of radius 6 in. with density function p(x) =e-* 232. A jar lid of radius 3 in. with density function p(x) = In(x + 1) 248. [T] Find the work required to pump all the water out of a cylinder that has a circular base of radius 5 ft and height 200 ft. Use the fact that the density of water is 62 1b/ft3. 249. [T] Find the work required to pump all the water out of the cylinder in the preceding exercise if the cylinder is only half full