error: invalid type argument of unary '*' (have 'double')

 v=PI*r*r*h/3;

#include <stdio.h>
#define PI 3.14159;
int main ()
{
	double r,h,v,m; 
	scanf ("%f %f", &r, &h);
	if (h>=0 && h<=5 && r<=5 && r>=0)
	  {
	  	v=PI*r*r*h/3;
	  	m=7.8*1e3*v;
	  	printf ("%.6lf %.4lf", v, m); 
	  }
	return 0;  	
}