To find the width of the cabinet using the volume formula, we start with the original volume formula:
\[ V = l \times w \times h \]
Where:
- \( V \) is the volume,
- \( l \) is the length,
- \( w \) is the width,
- \( h \) is the height.
To solve for the width (\( w \)), we need to rearrange the formula. We can do this by dividing both sides of the equation by \( l \times h \):
\[ w = \frac{V}{l \times h} \]
Now, substituting the values for \( V \), \( l \), and \( h \):
Given:
- \( V = 60 , \text{ft}^3 \)
- \( l = 4 , \text{ft} \)
- \( h = 5 , \text{ft} \)
We can calculate \( w \):
\[ w = \frac{60}{4 \times 5} \]
Calculating the denominator:
\[ 4 \times 5 = 20 \]
Now substituting back into the width formula:
\[ w = \frac{60}{20} = 3 , \text{ft} \]
Therefore, the width of the cabinet is 3 ft.