Answer Posted / yogesh

#include<stdio.h>
#define PI 3.1415
int main()
{
double area,perimeter,radius;
printf("Enter radius of Circle:");
scanf("%lf",$radius);
calculate(&area,&perimeter,radius);
printf("Area of Circle:%lf\nPerimeter of
Circle:%lf",area,perimeter);
}
calculate(double *a,double *p,double r)
{
*a=PI*r*r;
*p=2*PI*r;
}

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