Program:
#include<stdio.h>
int main()
{
float r,pi=3.14,a;
printf("Enter radius of circle: ");
scanf("%f",&r);
a=pi*r*r;
printf("Area of circle: %.2f\n",a);
return 0;
}
Output:
#include<stdio.h>
int main()
{
float r,pi=3.14,a;
printf("Enter radius of circle: ");
scanf("%f",&r);
a=pi*r*r;
printf("Area of circle: %.2f\n",a);
return 0;
}
Output:
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