= 1/2*()*

#include

void main ()

{ }

float A1,A2,h,area;

printf("Please insert to side1");

scanf("%",&A1);

printf("Please insert to side2");

scanf("%",&A2);

printf("Please insert to side hight");

scanf("%f",&h);

area = 0.5 * (A1+A2)*h;

printf("Result area is %f",area);

enter

#include

void main ()

{

float r,area;

printf("please insert to radius:");

scanf("%f",&r);

area = 3.14*r*r;

printf("\nArea of circle : %f",area);

}