Use a double integral to find the volume of the solid bounded by the graphs of the equations. z =x + y, - 25 (first octant)

i'm sorry but i could not see this answer clearly, may this be re-done?   Find the volume of the solid generated by revolving the region bounded by the graphs of the equationsabout the x-axis. Express the result as an exact value. y=9-x2 , y=x+3

Can you help me evaluate by finding the volume of the solid bounded by the graphs of the equation.

Find the volume of the indicated region. The region that lies under the paraboloid z=x^2+y^2 and above the triangle enclosed by the lines x=8,y=0, and y=3x