Answer:
315 fl oz cleaning solution is needed for the hallway
Explanation:
Area of the hallway floor = length * breadth
A = l * b
A = 90 ft * 7 ft = 630 square feet
Amount of cleaning solution required = total area * Amount of cleaning solution required per square feet.
Amount = 0.5 fl oz/ft^2 * 630 square feet
= 315 fl oz
