Question 1081542
cuts a piece of paper 0.03 mm thick into three equal parts. 
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{{{3*0.03}}}



Then he cuts eaxh of these parts into three parts again 
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{{{3*3*0.03}}}




and in the process repeats until the tenth time,
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The pattern is that the number of times the cuttings are made, the exponent on the 3 increments by 1.  This time it is 10.

{{{(3^10)*0.03}}}



 he managed to pile all the pieces of paper.
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{{{(0.03*mm)*3^10}}}

{{{0.03*59049}}}

{{{1771.47*mm}}}

maybe 1.8 meters, if the initial 0.03 mm is just a measurement to one significant figure.