Number 45 and 48

44. y = 9 - x2, - 25 x5 2 Finding the Area of a Surface of Revolution In Exercises 45-48, write and evaluate the definite integral that represents the 0 area of the surface generated by revolving the curve on the indicated interval about the y-axis. 45. y = 3/x + 2, 15 x5 8 46. y = 9 - x, OSx 5 3 47. y = 1 -* OSX s 2 48. y = + 3, 1 5 x 5 5 4 NI St. erted A Finding the Area of a Surface of Revolution Using use the integration