Question

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A program in Java for area of circle

Answer 1

class AreaofCircle{
　　　public static void main()
　　　{
　　　　　{
　　　　　int r = 7;
　　　　　int Area = 22/7 * 7 * 7;
　　　　　System.out.println("Area of circle = " + Area);

　　　　　}
　　　　　}
　　　}

　　　　　　　　Output

Area of circle = 154

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Java is a predifined computer specialized coding.

Java follows some rules in the programs.

Answer 2

Hi

Here is your answer hope it helps

import java.util.Scanner;

public class Area

{

public static void main(String[] args)

{

int r;

double pi = 3.14, area;

Scanner s = new Scanner(System.in);

System.out.print("Enter radius of circle:");

r = s.nextInt();

area = pi * r * r;

System.out.println("Area of circle:"+area);

}

}

Output:

$ javac Area.java $ java Area   Enter radius of circle:5 Area of circle:78.5

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