we know that
The wing that Derrick measured was 0.1 m
The wing that Leslie measured was (1/10) as long as the wing that derrick measured
so
To find the length of the wing that Leslie measured
Multiply 0.1 by (1/10)
[tex]0.1*\frac{1}{10} =0.01\ meters[/tex]
therefore
the answer is
[tex]0.01\ meters[/tex]