URI-1012

URI Online Judge | 1012

Area

Adapted by Neilor Tonin, URI  Brazil

Timelimit: 1

Problem link Click here

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;

    double pi=3.14159;

    scanf("%lf %lf %lf",&a,&b,&c);

    printf("TRIANGULO: %.3lf\nCIRCULO: %.3lf\nTRAPEZIO: %.3lf\nQUADRADO: %.3lf\nRETANGULO: %.3lf\n",.5*a*c,pi*c*c,((a+b)/2)*c,b*b,a*b);

    return 0;

}