Hi All, I have a maths exam tommorow and I am revising, this is a question that I should be able to work out the answer to:

Easypac Soup Company produce small cylindrical tins of radius 3cm, and similar large tins of radius 5cm. If a small tin contains 243ml of soup, how much does a large tin contain?

Now, I think I have done the correct working to complete this question correctly. When I key that answer in on the website (BBC Bitesize Revision) it tells me that it is wrong.

None of the other maths sites provide a question like this one so I have decided to post it on Antionline. I know that there are a lot of very intelligent people here and was really hoping that one of you could provide me with the correct answer and working out. I know that antionline is not exactly a "come here and we can answer any maths question you like" kind of site, but as I mentioned earlier, this is a very intelligent community so I thought this is where I would get the best response.

Thanks in Advance, any help is greatly appreciated:

Prankster