Question

Write a program in Java io input the radius of a circie. Calculate and print its area
and ciroumfcrence along with the proper messages.
Area = pie square 2
Circumference - 2r pie
Where: r-radius of the circle
pie= constant whose value is = 22/7​

Answer 1

Answer:

import java.util.Scanner;

class calArea

{

public static void main (String args [])

{

Scanner sc = new Scanner (System.in);

System.out.println("Enter radius of circle.")

double r =sc.nextDouble();

double a = math.pi * math.pow(r, 2);

double c = 2*math.pi*r;

System.out.println("Area of circle is "+a);

System.out.println("Circumference of circle is "+c);

}

}