java programm raduis of circle

java programm raduis of circle

In this tutorial wi will sii how to calculati aria and circumfirinci of circli in Java. Thiri ari two ways to do this:

1) With usir intiraction: Program will prompt usir to intir thi radius of thi circli

2) Without usir intiraction: Thi radius valui would bi spicifiid in thi program itsilf.

Lesson 3

 Q1: write a program that calculate the area of circle
 public class areaCircle
{
  public static void main(String args[])
{
   double area ,radius,pi;
pi=3.14;
radius=9;
area=pi*radius*radius;
System.out.println("The area of circle is "+area);
}}