This is a question from Webassign and I have no clue on how to approach this. Question: Find the volume of the given solid.

This is a question from Webassign and I have no clue on how to approach this.

Question:

Find the volume of the given solid. Enclosed by the paraboloid z=2x2+4y2 and the planes x= 0,y=2,y=x,z= 0

I'd be grateful if someone can teach me how. Thank you