C :

#include<stdio.h>
int main()
{double r;
printf("%0.2f\n",266.0*3.1415926);
}

C++ :

#include<cstdio>
using namespace std;
int main()
{
	float pp=3.1415926;
	float rr,s,hh;
	rr=7; hh=12;
	s=2*pp*rr*rr+2*pp*rr*hh;
	printf("%0.2f\n",s);
	return 0;
}

Pascal :

program aa;
var a,r,d,s,c,h:real;
begin
 a:=3.1415926;
 h:=12;
 r:=7;
 s:=2*a*r*r+2*a*r*h;
 write(s:0:2);
end.