#include <stdio.h>
#include <conio.h>
main()
{

	printf("Program : Calculating the area of a trapezium\n");
    float e,f,g,h;
    printf("\nInput e :");
    scanf("%f" ,&e);
    printf("\nInput f :");
    scanf("%f" ,&f);
    printf("\nInput g :");
    scanf("%f" ,&g);
    h=e*f*g;
    printf("\nResult : %.2f\n",h);
    printf("\n By Phetlada Yantaburt No.21");
}