编辑代码

public class Rectangle{
	public static void main(String[] args) {
        double a=1.9;
        double b=0.3;
        double perimeter=(a+b)*2;
        double area=a*b;
		System.out.println("长方形的周长是:"+perimeter+"米");
        System.out.println("长方形的面积是："+area+"米");
        System.out.println("14 pwc");
	}
}