Please show how you solve these two problems for vector calculus. Please do numbers 7 PART A AND B AND 8 :) refrences: Multivariable Calculus; 6th edition; McCallum, Hughes-Hallett, Gleason, et al.; Wiley.

7. Consider the solid bounded above by z= -Vx2 + y and below by z=-V4-x2 - y2 a. Set up a triple integral including the limits of integration, that gives the volume of the solid. b. Set up a double integral including the limits of integration, that gives the volume of the solid. 8. Set up the integral to find the average value f (x, y) = ax+ by on the upper half of the circular disk of radius R with center at the origin