CS1 lab (this is too easy)

import java.util.*;

public class lab5a2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        double num = scanner.nextDouble();

        System.out.println("The area of a square with a side length of " + num + " is " + Math.pow(num, 2));

        System.out.println("The volume of a sphere with a radius of " + num + " is " + (4/3) * Math.PI * Math.pow(num, 3));

        System.out.println("The side length of a square with an area of " + num + " is " + Math.sqrt(num));
    }
}