Problem: 2.10

Question 2.10: Write a Java program to print the area and perimeter of a circle.

Test Data:

Radius = 7.5

Expected Output

Perimeter is = 47.12388980384689

Area is = 176.71458676442586

Solution: 

package com.company;

import java.util.Scanner;

public class Lab2problem10 {

    public static void main(String[] args)

    {

        Scanner Obj =new Scanner(System.in);

        System.out.println("enter the radias:");

        double r =Obj.nextDouble();

        double pi = 3.1416;

        double perimeter =2 * pi* r;

        double  area = pi * r * r;

        System.out.println("the perimeter: " + perimeter);

        System.out.println("the area: " + area);

    }

}