Find the mass and the x-coordinate of the center of mass of the lamina occupying the region R, where R is the region bounded by the graphs of y = sin(3x), y = 0, x = 0, and x = 17/3, and having mass density p(x,y) = 4y.Find the area of the surface S where Sis the part of the plane 2 = 31' + y that lies above the triangular region with vertices (0,0), (2,0) and (2,2)