Solved Use Polar Coordinates To Find The Volume Of The Given Solid Above The Cone Z X 2 Y 2 And Below The Sphere X 2 Y 2 Z 2 1 First, remember that graphs of functions of two variables, z = f (x,y) z = f ( x, y) are surfaces in three dimensional space For example, here is the graph of z =2x2 2y2 −4 z = 2 x 2 Use polar coordinates to find the volume of the given solid Under the cone z = Sqrt x^2 y^2 Above the disk x^2 y^2 Graph of cone z=sqrt(x^2+y^2)