Figuring the average diameter is 16", that's ~146cf of solid wood.
so 146/80=~1.8 cords of stacked wood
There's about 80cf of solid wood in a full cord of stacked wood(the rest is air). Depending on how it's stacked, I've seen estimates of 70-90cf of solid wood in a stacked cord.
Any branch wood would add up to a little more...