How do i solve this question for C#? This is what i wrote but as you can see, it doesn't work (I'm new to C# i need explanation)

Question

https://code.sololearn.com/cHn096ubND3r/?ref=app

Answer 1

As stated the WriteLiene cannot be assigned to a variable, its value is void.

Provide a numeric data type for your num variable, and assign it to with r*r
When using int, this will look like this:

int num = r*r;

Answer 2

MrFruitL

You have defined radius and taking input in another variable?

where did you define num?

Formula for area is (pi * r * r) and what are you doing doens't make sense.

What is the reason to assign Console.WriteLine(r*r) in num?

Take some time to understand concepts otherwise you will not learn anything.

Answer 3

MrFruitL

Console.WriteLine() is use to print so you can't assign it in any variable.

Take some time to understand concepts.

Answer 4

Hmmm alright thanks, i learned C# 5 months ago and stopped. I guess i got pretty self confident. Thanks