Length x width x height
Take the bottom rectangle and find the volume then take the top rectangle and find the volume. The volume of the top rectangle is 5x2=10 so 10x4 =40 so the volume of the top triangle in 40. Now we have to find the volume of the bottom triangle. 3x7=21 then 21x4=84 so 84+40=124
So the volume of the irregular shape is 124.