Answer:
d = 7 meters
Step-by-step explanation:
Volume of a rectangular prism (a box) is
length × width × height
You have three out of these four numbers, let's set it up.
Vol = l × w × h
84 = d × 2 × 6
84 = 12d
Divide both sides by 12.
84/12 = 12d/12
7 = d
