3. Find the volume of the solid below the graph of the equation and above the region of the xy-plane bounded by the polygon of given vertioes. 3} z = 4x2 + 3F; (0,0), {0,1}. (2, a), (2,1). h} z = x2 + 4y2; (0,0), {1,0}. (1, 2)