interface
 
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;
 
type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;
 
var
  Form1: TForm1;
 
implementation
  uses unit2;
{$R *.dfm}
 
procedure TForm1.Button1Click(Sender: TObject);
begin
w1(1,2);
end;
 
end.

unit Unit2;
 
interface
 uses SysUtils, Math;
 
procedure w1(s,k:extended);
 
 
var a:extended;
 
implementation
uses unit1;
 
procedure w1(s,k:extended);
begin
a:=sqr(s*k);
Form1.Edit1.Text:=FloatToStr(a);
end;
 
end.