Q-2 dotnet, C# - rextester

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        static float pi = 3.14159f; 
  
        // Function to calculate Volume of cone 
        public static float volume(float r, float h) 
        { 
            return (float)1 / 3 * pi * h * r * r; 
        }

// Function to calculate Surface area of cone 
        public static float surface_area(float r, float s) 
        { 
            return pi * r * s + pi * r * r; 
        } 
        public static void Main(string[] args)
        {
            float radius = 5; 
            float slant_height = 13; 
            float height = 12;

// Printing value of volume and surface area 
            Console.Write("Volume Of Cone : "); 
            Console.WriteLine(volume(radius, height));

Console.Write("Surface Area Of Cone : "); 
            Console.WriteLine(surface_area(radius, slant_height));          
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,12 sec, absolute running time: 0,11 sec, cpu time: 0,09 sec, average memory usage: 19 Mb, average nr of threads: 3, absolute service time: 0,26 sec