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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. double A, B, C, n;
  5. scanf("%lf %lf %lf", &A, &B, &C);
  6. n = 3.14159;
  7. printf("TRIANGULO: %.3lf\n", (A*C)/2);
  8. printf("CIRCULO: %.3lf\n", n*C*C);
  9. printf("TRAPEZIO: %.3lf\n", (A+B)*C/2);
  10. printf("QUADRADO: %.3lf\n", B*B);
  11. printf("RETANGULO: %.3lf\n", A*B);
  12. return 0;
  13. }
  14.  
Success #stdin #stdout 0s 9424KB
stdin
12.7 10.4 15.2
stdout
TRIANGULO: 96.520
CIRCULO: 725.833
TRAPEZIO: 175.560
QUADRADO: 108.160
RETANGULO: 132.080