Double integral volume

Find the volume of the region bounded by z = 8 - y^2, y = 8 - x^2, x = 0, y = 0, z = 0.

I do not know how to handle this situation at all. Please help!

int over x in [ 0 , √8 ] , y in [ 0 , 8 - x² ] of { ( 8 - y² ) dy dx }

note that the region is NOT well defined { as typed }...the volume could be in

either the 1st or 2nd octant { volume in each is the same }