Arectangular room must have a maximum area of 84 square feet. if the room is to be 8 feet wide, what is the longest the room can be? . . 10.4. 10.5. 10.6. do i just multiply and if so its 10.5

Length of the room should be 10.5 feet.

Step-by-step explanation:

The maximum area of a rectangular room is 84 square feet.

let the length of the room = x feet

Then area of the room = length × width

84 = length × 8 = 8x

Length x = 84/8 = 10.5 feet.

So the answer should be 10.5 feet

the correct is answer is a 9-sided polygon!