The result of your conversion between acre [survey] and carreau appears here
To convert between Acre [survey] and Carreau you have to do the following:
First divide 0.092903412*43560 / 12900 = 0.31371106
Then multiply the amount of Acre [survey] you want to convert to Carreau, use the chart below to guide you.
Symbol: ac
No description
Symbol: carreau
No description