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  1. #include <stdio.h>
  2.  
  3. int main() {
  4. float side1, side2, height, area;
  5.  
  6. scanf("%f", &side1); // get first side
  7.  
  8. scanf("%f", &side2); // get second side
  9.  
  10. scanf("%f", &height); // get height
  11.  
  12. area = 0.5 * height * (side1 + side2); // 0.5 * Height * (Sum of opposite sides)
  13.  
  14. printf("%.2f", area); //print
  15.  
  16. return 0;
  17. }
  18. // Sawan Khwannet M.6/2 No.23
Success #stdin #stdout 0s 5244KB
stdin
6.5
1.5
3
stdout
12.00