This is about Volume of Cylinders.

Volume = area of the circle * h

What is the area of the circle?

Please no one, other than the asker, answer.

Can you atlest tell me the formula? :(

I did tell you the formula.

V = Area of the circle * h

The area of a circle is so easy to find on the internet that I would be insulting your intelligence if I gave it to you.

Just google "area of a circle" and you will find it straight away.