- I am not sure where all these numbers came from but:

- there are 43560 sq ft in one acre

- sq ft in 1.8 acres = 43560 x 1.8

- 78,408 sq ft in 1.8 acres

BTW: An acre, if square, is approx 208.7ft x 208.7ft.

---} The evidence {---

51400.79 Sq Ft.

An acre is 400feet x400 feet or 160,000 feet and .18 of 160,000 is 28,800 so 1.18 acres would be 188000 feet of space I think I maybe way wrong but check it out