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  1. #include<stdio.h>
  2. #define  PI 3.141592653589793
  3. int main ()
  4. {
  5. double a,b;
  6. scanf("%lf",&a);
  7. b=sqrt(a)*pow(6371.393,2)*PI;
  8. printf("%.3lf\n",b);
  9. return 0;
  10. }
Success #stdin #stdout 0.01s 5316KB
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285169886.614
https://ideone.com/YZgntx
language:
C (gcc 8.3)
created:
15 hours ago
visibility:
public

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