Question

a program for generating area of circle

Answer 1

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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

Answer:

// Java program to find area

// of circle

class Test

{

static final double PI = Math.PI;

static double findArea(int r)

{

return PI * Math.pow(r, 2);

}

// Driver method

public static void main(String[] args)

{

System.out.println("Area is " + findArea(5));

}

Step-by-step explanation: