Answer:
The maximum number of boxes that will fit inside the trailer will be 952.
Explanation:
Volume of single box = a² = (1.5)² = 2.25 square feet.
Volume of cargo space = L x B x H = (28 x 8.5 x 9) = 2142 square feet.
The maximum number of boxes that will fit inside the trailer will be -
n = {(L x B x H)/a²}
n = (2142/2.25)
n = 952