Given :
A stack of 500 pieces of paper is 1.654 inches tall.
Mulan guesses that each piece of paper is 0.045 inches thick.
To Find :
The actual thickness of paper and how is Mulan's answer is incorrect.
Solution :
Let, actual thickness is t.
So,

So, actual thickness is 0.003308 inches.
Therefore, the Mulan's answer is incorrect.