sisi miring,luas,dan keliling segitiga

#include<stdio.h>
#include<conio.h>
#include<math.h>

void main()
{

float a,t,r,K,L;


scanf("%f%f",&a,&t);

r=sqrt(a*a+t*t);

K=a+r+t;

L=(a*t)/2;

printf("r=%.2f, K= %.2f, L= %.2f",&r,&K,&L);

getch();
}


sumber : http://www.kaskus.us/showthread.php?t=1215259