Question

A rectangular 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

Answer 1

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!

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