To find the width of the box, we can use the formula for the volume of a right rectangular prism:
\[ \text{Volume} = \text{length} \times \text{width} \times \text{height} \]
Given:
- Volume = 162,000 cm³
- Height = 40 cm
- Length = 90 cm
We need to solve for width (W).
Substituting the known values into the formula gives:
\[ 162,000 = 90 \times W \times 40 \]
Now simplifying the equation:
\[ 162,000 = 3600 \times W \]
Next, we can solve for W:
\[ W = \frac{162,000}{3600} \]
Calculating this further:
\[ W = 45 , \text{cm} \]
Therefore, the width of the box is 45 cm.