The result of your conversion between perch and square mile appears here
To convert between Perch and Square Mile you have to do the following:
First divide 25.29285264 / 0.09290304*27878400 = 0.00000977
Then multiply the amount of Perch you want to convert to Square Mile, use the chart below to guide you.
Symbol: perch
No description
Symbol: mi²
No description