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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4. #define PI 3.14159265
  5.  
  6. int main() {
  7. 	double a, b, alpha, h=0;
  8.     cin >> a >> b >> alpha;
  9.     h = ((a-b) / 2 ) * tan(alpha);
  10.     cout << h * ( (a+b) / 2);
  11.     return 0;
  12.     }
Success #stdin #stdout 0s 3416KB
comments (?)
stdin 
30 	20 	0.523599
stdout 
72.1688
https://ideone.com/g3TXYX
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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