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/* Program to calculate area of circle and its circumference.*/

#include<stdio.h>
#include<conio.h>
#define PI 3.14
int main()
{
float r,area,circum;
clrscr();
printf("enter value of radius: ");
scanf("%f",&r);
area=PI*r*r;
circum=2*PI*r;
printf("value of area is %f",area);
printf("value of circumference is %f",circum);
getch();
return 0;
}