1012 Area

URI Online Judge | 1012

Area

Make a program that reads three floating point values: A, B and C. Then, calculate and show:
a) the area of the rectangled triangle that has base A and height C.
b) the area of the radius's circle C. (pi = 3.14159)
c) the area of the trapezium which has A and B by base, and C by height.
d) the area of ​​the square that has side B.
e) the area of the rectangle that has sides A and B.

Input

The input file contains three double values with one digit after the decimal point.

Output

The output file must contain 5 lines of data. Each line corresponds to one of the areas described above, always with a corresponding message (in Portuguese) and one space between the two points and the value. The value calculated must be presented with 3 digits after the decimal point.

Input Samples	Output Samples
3.0 4.0 5.2	TRIANGULO: 7.800 CIRCULO: 84.949 TRAPEZIO: 18.200 QUADRADO: 16.000 RETANGULO: 12.000

12.7 10.4 15.2

TRIANGULO: 96.520 CIRCULO: 725.833 TRAPEZIO´: 175.560 QUADRADO: 108.160 RETANGULO: 132.080

Solution:

#include <stdio.h>

int main()
{
 double a, b, c;

 scanf("%lf %lf %lf", &a, &b, &c);
 printf("TRIANGULO: %.3lf\n", (a * c) / 2);
 printf("CIRCULO: %.3lf\n", c * c * 3.14159);
 printf("TRAPEZIO: %.3lf\n", ((a + b) / 2) * c);
 printf("QUADRADO: %.3lf\n", b * b);
 printf("RETANGULO: %.3lf\n", a * b);

 return 0;

}