FIRST STEPS IN CODING - MORE EXERCISES 01. Trapeziod Area

import java.util.Scanner;

public class T10 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        Double B1 = Double.parseDouble(scanner.nextLine());
        Double B2 = Double.parseDouble(scanner.nextLine());
        Double H1 = Double.parseDouble(scanner.nextLine());

        Double Formule = (B1 + B2) * H1 / 2;

        System.out.printf( "%.2f",Formule);
    }
}