Question 1151128
.


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Start from learning on &nbsp;"<U>what a paper roll is</U>".


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Type these words into the &nbsp;GOOGLE &nbsp;search engine and look into the &nbsp;<U>images</U>&nbsp; it will produce for you in response.



<U>Solution</U>


<pre>
Total mass is the same;


the density of the paper is the same in both cases


    ========> h e n c e =========>


the volume  <U>MUST  be  THE  SAME</U>  in both cases.
</pre>

----------------


Had they be different, &nbsp;then the &nbsp;"PERPETUUM &nbsp;MOBILE" &nbsp;would be possible to construct &nbsp;(!) &nbsp;(!) &nbsp;(!)