Final answer:
To find the real-life length of the hallway, we divided the blueprint measurement by the scale unit and then multiplied the result by the scale's real-life measurement, resulting in a hallway that is 19.8 feet long.
Step-by-step explanation:
Kelsey found the blueprint of a movie theater that shows the hallway between rooms to be 9 inches long. Given that the scale is 2 inches equals 4.4 feet, to determine the actual length of the hallway in real life, we need to first find out how many times the scale fits into the 9-inch measurement of the hallway on the blueprint.
To do this, we divide 9 inches by the scale unit, which is 2 inches:
9 inches ÷ 2 inches = 4.5
This means the scale factor of 2 inches = 4.4 feet applies 4.5 times. To find the real-life length, we multiply 4.4 feet by 4.5:
4.4 feet × 4.5 = 19.8 feet
Therefore, the length of the hallway in real life is 19.8 feet.