Sphere, float

Proposed exercise

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Calculate the surface and volume of a sphere, given its radius (surface = 4 * pi * radius squared; volume = 4/3 * pi * radius cubed).

Hint: for "float" numbers, you must use Convert.ToSingle(...)

Output

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Solution

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using System;
public class Sphere
{
public static void Main()
{   
float radius;
float pi = 3.1415926535f;

Console.Write("Radius? ");
radius = Convert.ToSingle(Console.ReadLine());

Console.WriteLine( 4 * pi * (radius * radius) );

Console.WriteLine( 4/3 * pi * (radius * radius * radius));
}
}