Java program to print the area and perimeter of a circle (Java) (172)

package com.company;
import java.util.Scanner;
public class Program9 {
    public static void main(String[] args) {
        System.out.println("please enter the radius of the circle:");
        Scanner AP = new Scanner(System.in);
        float radius=AP.nextFloat();
        double pi=3.14;
        double area= pi*radius*radius;
        System.out.println("the area of a circle is:");
        System.out.println(area);
        double peri=2*pi*radius;
        System.out.println("the perimeter of the circle is:");
        System.out.println(peri);

    }
}