Answer:
[tex]15\sqrt{2}[/tex]
Step-by-step explanation:
The formula we can use is
[tex]d=\sqrt{2} *a[/tex]
Where d is the length of the diagonal and a is the length of the side of the square
Since, the floppies are in square shape and side length is 15, so a = 15
We simply put it into the formula and get length of diagonal.
[tex]d=\sqrt{2} *a\\d=\sqrt{2} *15\\d=15\sqrt{2}[/tex]
Hence, diagonal length is [tex]15\sqrt{2}[/tex]