Answer:
297 cubic feet
Explanation:
1. Find total volume of the box: V=lwh
l=11 ft, w=6 ft, h=6 ft (doesn't matter which is which in this case)
V=(11 ft)(6 ft)(6 ft)
V=396 cubic feet
2. Find volume of 3/4 of the box
Multiple the total volume by 3/4: what you are doing is diving the volume into four parts and only taking three of them since that is how much will be filled up with trash.
3/4V=x, V=396 cubic feet
3/4(396) = 3(396)/4 = 1188/4 = 297 cubic feet