01  #include<stdio.h>
02  #include<math.h>
03  
04  int main()
05  {
06   int b1,b2,h;
07   float area;
08  
09   printf("nEnter value of the bases : ");
10   scanf("%d %d", &b1,&b2);
11  
12   printf("nEnter the value of the height : ");
13   scanf("%d", &h);
14  
15   area = (float) ( (b1+b2)*h )/2;
16  
17   printf("nArea of a Trapezoid : %.2f", area);
18   return 0;
19  }

 
 OUTPUT :
 
 Enter value of the bases : 5 10
 Enter the value of the height : 12
 
 Area of a Trapezoid : 90.00