UVA 10432 - Polygon Inside A Circle
Problem PDF
Solution:
/*-------------------------------------------------------------*/
//Poblem Setter : Suman Mahbub
//Uva Problem No: 10432
//Problem Name : Polygon Inside A Circle
//Type : Geometry, Area of a regular convex polygon.
//Author : Shipu Ahamed
//University : BUBT
//E-mail : [email protected]
/*--------------------------------------------------------------*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#define ll long long
#define sc scanf
#define pf printf
#define pi 2*acos(0.0)
using namespace std;
int main()
{
double r,s,p;
while(sc("%lf %lf",&r,&s)==2)
pf("%.3lf\n",r*r*s*sin((2*pi)/s)/2);
return 0;
}