Program11.c

//Take input from user for radius of circle and display the area of circle

#include<stdio.h>

int main()
{
    float fRadius = 0.0f;
    float fArea = 0.0f;

    printf("Enter the radius of circle\n");
    scanf("%f" , &fRadius);

    fArea = 3.14f * fRadius * fRadius;

    printf("Area of circle is : %f\n" , fArea);

    return 0;

}