>>>>>Ok, I think this one is actually relatively easy - but I find it interesting nonetheless.
>>>>>
>>>>>Assume that the Eiffel Tower has a mass of 8000 tons, and a height of 300 m.
>>>>>
>>>>>What would be the mass of a model, made to scale - accurate in every detail, and made from the same material - having a height of 30 cm.?
>>>>
>>>>Can we consider Eiffel Tower as cylinder?
>>>
>>>Only if it looks to you as cylinder.
>>
>>I don't think it's conus (?) either. When what?
>
>Assume it's a pyramid - but its shape is irrelevant. The problem would have the same solution even if it was a cylinder, cone, ball or human figure.

I would need to re-read some math books. Out of the top of my head I can write a formula for cylinder's volume and not sure about the rest.