Dessiatin
A dessiatin or desyatina is an archaic land measurement used in tsarist Russia. A dessiatin is equal to 2 400 square sazhens and is approximately equivalent to 2.702 English acres or 10 926.512 square metres.
- Treasury/official desyatina казённая десяти́на, kazionnaya desyatina) = 10,925.4 m2 = 117,600 sq ft = 2.7 acres = 2,400 square sazhen
- Proprietor's = 14,567.2 m2 = 156,800 sq ft = 3,200 square sazhen
Hence 3 proprietor's desyatinas = 4 official desyatinas.