URI Online Judge | 1012 Area (Solution) (Solution)

Problem Link:
https://www.urionlinejudge.com.br/judge/en/problems/view/1012

URI Online Judge | 1012

Area

Adapted by Neilor Tonin, URI  Brazil

Timelimit: 1

Make a program that reads three floating-point values: A, B and C. Then calculate and print:
a) the area of the rectangled triangle that has base A and height C.
b) the area of the circle of radius C. (pi = 3.14159)
c) the area of the trapezium which has base A and B 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 numbers with one digit after the decimal point.

Output

The output file contains 5 lines of data. Each line correspond to one of the areas described above, always with a corresponding message (in portuguese) and one space after the ":" and before the calculated number. All calculated number must be printed with 3 digits after the decimal point.

Sample Inputs	Sample Outputs
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;

}