To determine the space needed to transport the boxes, we first calculate the volume of a single box using the formula for the volume of a cube:
\[ V = s^3 \]
where \( s \) is the side length of the cube.
Given that the side length of each box is 18 inches, we can calculate the volume of one box:
\[ V = 18^3 = 18 \times 18 \times 18 \]
Calculating step by step:
- \( 18 \times 18 = 324 \)
- \( 324 \times 18 = 5,832 \)
So the volume of one box is \( 5,832 \) in³.
Next, we need to find the volume for 75 boxes:
\[ \text{Total Volume} = 75 \times 5,832 \]
Calculating that:
\[ 75 \times 5,832 = 437,400 \text{ in}^3 \]
Thus, the total volume required to transport the 75 boxes is 437,400 in³.
The correct response is:
437,400 in.³