Let ftx) = + -2 and let R be the region bounded by the graph off and the xaxis on the 4 8x . ' interval [1, 4]. a. Fund the area of the surface generated when the graph of f on [1, 4] is revolved about the x-axis. Use technology to evaluate or approximate the integral. I). Find the length of the curve y = f(x) on [1. 4]. c. Find the volume of the solid generated when R is revolved about the yaxis. _ ' :1. Find the volume of the solid generated when R is revolved about the x-axis. Use technology to evaluate or approxtmate the Integral. a. The area of the surface generated is D. (Do not round until the nal answer. Then round to the nearest tenth as needed.) b