HNG9 Mobile track task 1.

mytask.dart

import 'dart:math';

main() {
  //Create circles
  Circle circle1 = Circle();
  Circle circle2 =  Circle.withRadius(2);
  Circle circle3 =  Circle.withRadiusAndClor(2, "blue");

  //Print circles
  print("Circle 1: ");
  print("Area: ${circle1.getArea()}");
  print("Circumference: ${circle1.getCircumfrence()}");
  print("Description: ${circle1.getDescription()}");
  print("Color: ${circle1.getColor()}");
  print("");

  print("");
  print("Circle 2: ");
  print("Area: ${circle2.getArea()}");
  print("Circumference: ${circle2.getCircumfrence()}");
  print("Description: ${circle2.getDescription()}");
  print("Color: ${circle2.getColor()}");
  print("");

  print("");
  print("Circle 3: ");
  print("Area: ${circle3.getArea()}");
  print("Circumference: ${circle3.getCircumfrence()}");
  print("Description: ${circle3.getDescription()}");
  print("Color: ${circle3.getColor()}");
}

class Circle {
  //Properties
  double radius = 0;
  String color = "black";

  //Constructors
  Circle() {
    radius = 1;
    color = "red";
  }

  Circle.withRadius(this.radius) {
    
    color = "red";
  }

  Circle.withRadiusAndClor(this.radius,this.color);

  //Methods
  double getArea() {
    return pi * pow(radius, 2);
  }

  double getCircumfrence() {
    return 2 * pi * radius;
  }

  String getDescription() {
    return "Radius: ${radius.toInt()} Color: $color";
  }

  String getColor() {
    return color;
  }
}