摘要: package lianxi; public class Yuan { public static void main(String[] args) { double r=3.0; double circle=2*r*Math.PI; double area=Math.PI*r*r; System. 阅读全文
posted @ 2016-05-24 14:02 刘某人丶 阅读(1869) 评论(0) 推荐(0) 编辑