Arectangular room must have a maximum area of 84 square feet. the room needs to be 8 feet wide. what is the longest the room can be? a. 10.4 b. 10.5 c. 10.6

Hi there.

The short answer is 10.5 feet in length.

I solved this in my head by going 8 · 10 = 80. 4 is half of 8, so it's 10.5.

Put it in a calculator and it works!

~

You can use a calculater and divide the minutes by the $$, hope that you