1. ...015ProjectsCircleFunctionsCircleFunctionsProgram.cs 1
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace CircleFunctions
{
class Program
{
/* Define Function for the Circumference of Circle
Use Lambda Expression */
static double circumferencecircle(double myradius) => 2 * Math.PI *
myradius;
/* Define Function for the Area of Circle
Use Lambda Expression */
static double areacircle(double myradius) => Math.PI * Math.Pow
(myradius, 2);
static void Main(string[] args)
{
// Declare Variables
Random myrnd = new Random();
double r = new double();
// Initalise Variables
r = 1000 * myrnd.NextDouble();
// Print Radius of Circle in General, Fixed and Scientific
Formats
Console.WriteLine($"Radius of Circle is {r} units");
Console.WriteLine(String.Format($"Radius of Circle is {r:f3}
units (to 3 decimal places)"));
Console.WriteLine(String.Format($"Radius of Circle is {r:e3}
units (to 4 significant figures)"));
// Print Circumference of Circle in General, Fixed and Scientific
Formats
Console.WriteLine($"Circumference of Circle is
{circumferencecircle(r)} units");
Console.WriteLine(String.Format($"Circumference of Circle is
{circumferencecircle(r):f3} units (to 3 decimal places)"));
Console.WriteLine(String.Format($"Circumference of Circle is
{circumferencecircle(r):e3} units (to 4 significant
figures)"));
// Print Area of Circle in General, Fixed and Scientific Formats
Console.WriteLine($"Area of Circle is {areacircle(r)} sq units");
Console.WriteLine(String.Format($"Area of Circle is {areacircle
(r):f3} sq units (to 3 decimal places)"));

2. ...015ProjectsCircleFunctionsCircleFunctionsProgram.cs 2
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Console.WriteLine(String.Format($"Area of Circle is {areacircle
(r):e3} sq units (to 4 significant figures)" ));
}
}
}