>>>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 was just changing my original question < g > It now should read as
What geometrical shape is the Eiffel Tower?
If it's not broken, fix it until it is.
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