Question

Danica has laid out floor tiles so they form a rectangle with a perimeter of 18 inches. what is the difference between the greatest and least possible areas of the rectangle

Answer 1

I believe this is right:
Least: 8 (length) x 1 (width) = 8
Greatest: 5 (length) x 4 (width) = 20
Difference: 20 - 8 = 12