The program calculates the area of ​​the triangle unit per square meter in terms of lengths Ribs whereby the law
0.5 ^ ((AREA = (S * (S - A) * (S - B) * (S - C
Where A, B and C are the lengths of sides of the triangle
A + B + C) * 0.5 = S)
He then transferred to the space unit per acre and carat and arrow
Where per acre = 4200.83 square meters