The result of your conversion between carreau and acre [survey] appears here
To convert between Carreau and Acre [survey] you have to do the following:
First divide 12900 / 0.092903412*43560 = 3.18764666
Then multiply the amount of Carreau you want to convert to Acre [survey], use the chart below to guide you.
Symbol: carreau
No description
Symbol: ac
No description