include <stdio.h>

int main()

{

float a,b,cv,dt;

printf("\tChuong trinh tinh chu vi - dien tich hinh chu nhat");

printf("

Nhap a=");

scanf("%f",&a);

printf("Nhap b=");

scanf("%f",&b);

cv=(a+b)*2;

dt=a*b;

printf("Hinh chu nhat co chu vi bang %f va dien tich bang %f

",cv,dt);

system("pause");

return 0;

}