Quyidagi masalaning dasturini tuzing

Quyidagi masalaning dasturini tuzing:

1. 
   (Muntazam beshburchak). Foydalanuvchi tomonidan muntazam beshburchakka tashqi chizilgan aylana radiusi kiritilganda, beshburchakning yuzasini hisoblovchi dastur tuzing.
   

Beshburchak yuzasining formulasi quyidagicha:

Bu yerda S beshburchak tomoni uzunligi bo’lib, quyidagiga teng:

T/r	Kiruvchi ma’lumot	Chiquvchi ma’lumot
1	3	21.3988
2	5	59.441
3	10	237.764

Kode:
#include
#include
using namespace std;
int main()
{
double R,S,pi=M_PI,Yuza;
cout<<"Radiusni kiriting"<std::cin >> R;
S=2*R*sin(pi/5);
Yuza=5*S*S/4*tan(pi/5);
cout<<"S="<cout<<"Yuza="<return 0;
}
R=3



R=5

R=10