O work). a) Find the area of the surface generated when the curve is rotated about the x-axis. y = V4x + 6 on [0, 5] b) Evaluate the integral. dx * V 4+ x2 c) Evaluate the integral. U2 + 200-15 13 + 402 - 50 -du d) Find the centroid of the region bounded by the curves y = -2x and y = 3 -x2 Upload Choose a File e