
9514 1404 393
Answer:
 3.85 in
Step-by-step explanation:
If the volume is increased by x=30 in³, then the new volume is ...
 x +27 = 30 +27 = 57 . . . . in³
This is the cube of the side length, so the new side length is ...
 ∛57 ≈ 3.85 . . . in