APC-PRAC-002.c (337B)
1 /* WAP to calculate area of a circle using math library 2 method. Take radius of the circle as input. */ 3 4 #include <stdio.h> 5 #include <math.h> 6 int main() 7 { 8 double r, area; 9 printf("Enter the radius of the circle : "); 10 scanf("%lf", &r); 11 area = M_PI * pow(r, 2); 12 printf("\nArea of the circle : %g", area); 13 return 0; 14 }