Question

A rectangular red sticker has an area of 9 square millimeters and a perimeter of 20 millimeters. What are the dimensions of the sticker?

Answer 1

1 millimeter by 9 millimeters

Explanation:

The only way to get an area of 9 is to have a length of 9 and a width of 1 or a width of 3 and a length of 3. They are asking for a rectangle so the second option is out. To find perimeter multiply 2L+2W. 2(9)=18 and 2(1)=2. 18+2=20 millimeters so you know it is correct.