package project

import java.net.SocketTimeoutException;

public class test {

????static String test1="hello";

????public static void main(String[] args){

????????String test2="world";

????????System.out.println("hello world!");

????????int r =5,h = 3 ;

????????double area=Math.PI*r*r;

????????double volume=area*3;

????????double rom=volume*750;

????????System.out.println("體積大小是："+volume);

????????System.out.println("容積大小是："+rom);

}

}