# C Program to find area of Circle (Use Constant)

Get radius of circle and find area of circle.

Sample Input 1:

4

Sample Output 1:

50.24

#### Program or Solution

` ````
#include<stdio.h>
int main()
{
const float pi=3.14;
int radius;
float area;
printf("Enter Radius:");
scanf("%d",&radius);
area=pi * (radius * radius);
printf("Area of Circle: %.2f",area);
return 0;
}
```

#### Program Explanation

Get radius of a circle (using scanf statement)

Calculate area by multiplying pi and radius and radius (area =pi*radius*radius) (pi is 3.14 , global constant) print area (using printf statement)