Can someone please help me quick with this question?? I've tried to solve it for several hours and the deadline is in 1 hour!! Thank you

1. a) Identify the interval around the origin where cos? (x) > and rotate the corresponding region shown in the 4 left figure about the x-axis. b) Draw a diagram with this region shaded by equally spaced linear cross-sections, labeling the bullet point endpoints of a typical such cross-section, and indicating the relevant radii for revolving it around the x-axis, while showing the reflection of this region across the axis of revolution. c) Set up the integral for the volume of this solid, and then d) use Maple to evaluate it exactly and then numerically to 4 decimal place accuracy. 1. a) Identify the interval around the origin where cos? (x) > and rotate the corresponding region shown in the 4 left figure about the x-axis. b) Draw a diagram with this region shaded by equally spaced linear cross-sections, labeling the bullet point endpoints of a typical such cross-section, and indicating the relevant radii for revolving it around the x-axis, while showing the reflection of this region across the axis of revolution. c) Set up the integral for the volume of this solid, and then d) use Maple to evaluate it exactly and then numerically to 4 decimal place accuracy