Convert from perch to stremma

Unit Definition (perch)
The perch is a unit of area. A perch of area covers exactly 272.25 square feet or about 25.292 85 square meters. There are 40 perches in a rood and 160 perches in an acre.

Unit Definition (stremma)
The stremma is a traditional Greek unit of area, now redefined to equal exactly 1000 square meters or 0.1 hectare (0.24710 acre).