Answer:
1260 ounce of the fluid.
Explanation:
Dimension of hallway = 90 feet × 7 feet
Area of the hallway = 90 × 7
= 630 square feet
Given that 1/2 (0.5) of a fluid ounce is required per square foot, the amount of cleaning situation to clean the hallway can be determined as;
=

=

= 1260 ounce
The amount of cleaning situation required to clean the hallway is 1260 ounce of the fluid.