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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4. int main() {
  5.    int n;
  6.    float x,r,d,l,s;
  7.    cin>>x;
  8.    cin>>n;
  9.    switch (n) {
  10.    case 1:
  11.         r=x;
  12.         d=2*r;
  13.         l=2*3.14*r;
  14.         s=3.14*r*r;
  15.         cout<<d<<":";
  16.         cout<<l<<":";
  17.         cout<<s;
  18.         break;
  19.    case 2:
  20.         r=x/2;
  21.         d=x;
  22.         l=2*3.14*r;
  23.         s=3.14*r*r;
  24.         cout<<r<<":";
  25.         cout<<l<<":";
  26.         cout<<s;
  27.         break;
  28.    case 3:
  29.         r=x/2*3.14;
  30.         d=2*r;
  31.         l=x;
  32.         s=3.14*r*r;
  33.         cout<<r<<":";
  34.         cout<<d<<":";
  35.         cout<<s;
  36.         break;
  37.    case 4:
  38.         r=sqrt(x/3.14);
  39.         d=2*r;
  40.         l=2*3.14*r;
  41.         s=x;
  42.         cout<<r<<":";
  43.         cout<<d<<":";
  44.         cout<<l;
  45.         break;  
  46.  
  47.    } 
  48.    return 0;
  49.  
  50. }
  51.  
Success #stdin #stdout 0s 15232KB
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https://ideone.com/zWr3yZ
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
public

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