Area of Figures

package com.company;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String figure = sc.nextLine();

        if (figure.equals("square")) {
            double side = Double.parseDouble(sc.nextLine());
            System.out.println(side*side);
        }

        if (figure.equals("rectangle")) {
            double side1 = Double.parseDouble(sc .nextLine());
            double side2 = Double.parseDouble(sc.nextLine());
            System.out.println(side1*side2);
        }

        if (figure.equals("circle")) {
            double rad = Double.parseDouble(sc.nextLine());
            double rescircle = Math.PI * rad * rad;
            System.out.printf("%.3f",rescircle);
        }

        if (figure.equals("triangle")) {
            double side1 = Double.parseDouble(sc.nextLine());
            double side2 = Double.parseDouble(sc.nextLine());
            double restriangle =  (side1*side2)/2;
            System.out.printf("%.2f",restriangle);
        }
    }
}