Circle_Area

import java.util.Scanner;
class area{
    public static void main(String[] args)
    {
        float r,a;
        float pi = 3.14f;
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter Radius");
        r = sc.nextFloat();
        a = pi * r*r;
        System.out.println(a);

    }
}