First, convert all of the mixed numbers into improper fractions.
2 3/4=11/4
3 1/8=25/8
1 3/5=8/5
Now, we know that to find the volume, multiply width, length, and height together.
11/4*25/8*8/5=2200/160 or 55/4 known as 13 3/4
The volume is 13 3/4 cm cubed.