Answer:30 feet.
Explanation:
To find the length of the hallway in feet when using a scale of 1 inch = 5 feet, we can use the following formula:
length (feet) = length (inches) * scale (feet/inch)
Substituting the given values, we get:
length (feet) = 6 inches * 5 feet/inch
This simplifies to:
length (feet) = 30 feet
Therefore, the length of the hallway in feet when using a scale of 1 inch = 5 feet is 30 feet.