Good evening,

can you help me with those questions

1.

Use the shell method to find the volume of the solid generated by revolving the shaded region about the y-axis. . . . The volume is (Type an exact answer, using 7 as needed.)\f13 Find the length of the curve x = - t - on 3 sys5. 39 4y 13 The length of the curve x = t - on 3sys5 is 39 4y (Type an integer or a fraction, or round to the nearest tenth.)Find the area of the surface generated by etpy e tey X = = revolving the curve x = 2 in the interval Osys In 3 about the y-axis . In 3 The area, S, of the surface is given by S = (Type an exact answer, using it as needed.)Find the center of the mass of a thin plate of constant density & covering the region bounded by the x-axis and the curve y = - cos x, - - Exs- 2 8