**The Program in C# Sharp program that takes the radius of a sphere as input and calculate and display the surface and volume of the sphere is given below:**

```
using System;
namespace SphereCalculator
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Hello Codeauri Family,enter the radius of the sphere here to calculate surface area and volume of sphere: ");
double radius = Convert.ToDouble(Console.ReadLine());
double surfaceArea = 4 * Math.PI * Math.Pow(radius, 2);
double volume = (4.0 / 3.0) * Math.PI * Math.Pow(radius, 3);
Console.WriteLine("Okay, the surface area of the sphere is: " + surfaceArea);
Console.WriteLine("Okay,the volume of the sphere is: " + volume);
}
}
}
```

## Output:

Hello Codeauri Family,enter the radius of the sphere here to calculate surface area and volume of sphere: 5

Okay, the surface area of the sphere is: 314.159265358979

Okay,the volume of the sphere is: 523.598775598299

## Pro-Tips💡

Here are the step by step execution of above program:

- The first line “using System;” includes the System namespace, which provides access to the Console class used in the program.
- The next line defines the namespace “SphereCalculator”.
- In the “Program” class, the “Main” method is defined as the entry point of the program.
- The program prompts the user to enter the radius of the sphere using “Console.WriteLine” method.
- The user input is then converted to a double value and stored in the “radius” variable using “Convert.ToDouble(Console.ReadLine())”.
- The surface area of the sphere is calculated using the formula “4 * Math.PI * Math.Pow(radius, 2)” and stored in the “surfaceArea” variable.
- The volume of the sphere is calculated using the formula “(4.0 / 3.0) * Math.PI * Math.Pow(radius, 3)” and stored in the “volume” variable.
- The surface area and volume of the sphere are displayed using “Console.WriteLine” method.
- The program ends after displaying the results.

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