Maple

2. [7 marks] Consider the region R that's bounded by the r-axis and the upper half of the circle (x - 6)2 + y? =9. For each of the following, (a) Sketch R. (b) State the integral representing the volume of the solid generated by rotating R about the r-axis using the disk method and evaluate using Maple. (c) State the integral representing the volume of the solid generated by rotating R about y-axis using the washer method and evaluate using Maple