C Program to Find Area and Circumference of Circle

How to write a C Program to Find Area and Circumference of Circle in C Programming Language ?


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C Program to Find Area and Circumference of Circle

Solution For 
#include<stdio.h>

int main()
{
int rad;
float PI=3.14,area,ci;

printf("Enter radius of circle: ");
scanf("%d",&rad);

area = PI * rad * rad;
printf("Area of circle : %f ",area);

ci = 2 * PI * rad;
printf("Circumference : %f ",ci);

return(0);
}

Output :

Enter radius of a circle : 1
Area of circle : 3.14
Circumference  : 6.28

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