Выдает такую ошибку Unit1.cpp(30): E2333 Class member 'Tr::Vvod_Tr4(int,int,int,int,int,int)' declared outside its class

//---------------------------------------------------------------------------
#include <math.h>
#include <vcl.h>
#pragma hdrstop
 
#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
 
class Tr
{
private:
int t1, t2, t3, t4, t5, t6;
float st1();
float st2();
float st3();
float pp();
public:
void Vvod_Tr4(int b1, int b2, int b3, int b4, int b5, int b6);
float ploshad();
};
void Tr::Vvod_Tr4(int b1, int b2, int b3, int b4, int b5, int b6);
{
t1=b1;
t2=b2;
t3=b3;
t4=b4;
t5=b5;
t6=b6;
}
float Tr::st1()
{
return sqrt(pow(t3-t1, 2)+pow(t4-t2, 2));
}
float Tr::st2()
{
return sqrt(pow(t5-t3, 2)+pow(t6-t4, 2));
}
float Tr::st3()
{
return sqrt(pow(t1-t5, 2)+pow(t6-t2, 2));
}
float Tr::pp()
{
return (st1()+st2()+st3())/2;
}
float Tr::ploshad()
{
return sqrt(pp()*pp()-st1())*(pp()-st2())*(pp()-st2()));
}
void __fastcall TForm1::Button1Click(TObject *Sender)
{
Tr T;
int c1, c2, c3, c4, c5, c6;
c1=StrToInt(Edit1->Text);
c2=StrToInt(Edit2->Text);
c3=StrToInt(Edit3->Text);
c4=StrToInt(Edit4->Text);
c5=StrToInt(Edit5->Text);
c6=StrToInt(Edit6->Text);
T.Vvod_Tr4(c1, c2, c3, c4, c5, c6);
float g=T.ploshad();
ShowMessage(FloatToStr(g));
}
//---------------------------------------------------------------------------

void Tr::Vvod_Tr4(int b1, int b2, int b3, int b4, int b5, int b6) // вот тут
{
t1=b1;
t2=b2;
t3=b3;
t4=b4;
t5=b5;
t6=b6;
}