public class Code208 {
	public static void main(String[] args){
		double pi = 3.14159;  //圆周率
		double radius = 1.5;  //半径
		double area = pi * radius * radius;  //计算圆的面积
		System.out.println("圆的半径是:" + radius);
		System.out.println("圆的面积是:" + area);
	}

}