Question

how to draw the region integration G of this triple integral and thus integration?

Answer 1

first draw your z from 0 to 4throot of pi.
and in your yz plane draw a line y=z.
and draw your height along x-axis as plane x=y and x=z
the volume is the region enclosed by these planes.

Answer 2

Can show me how to draw the height along x-axis as plane x=y and x=z? That is the most confusing part because the limit are of different axis. The rest I know.