CALCULATING THE AREA OF A TRAINGLE BY HERON'S FORMULA

The program heron.exe calculates the area of a triangle, using
the Heron's formula:

    S = SQRT(p*(p-a)*(p-b)*(p-c))

where a, b, and c are lengths of sides of the triangle, and

    p = (a + b + c) / 2


  Usage:

Run the program. In the opened dialog enter lengths of sides
of some triangle. In the next opened window You will sea
the result area of the triangle.