5th grade
posted by Chris .
If I have a perimeter of 28 inches, how many rectangles can I draw and what are the dimensions?

You can draw as many as you want.
Here is one:
8x6
Here is another
10x4
here is another
5x9 
I need to have 7 and have already used up the whole numbers 1X13, 2X12, 3X11, 4X10, 5X9, 6X8, so what is the 7th rectangle measurement????

7x7

Thanks. I thought a square would not be classified as a rectangle.

http://www.mathwarehouse.com/geometry/quadrilaterals/parallelograms/is_square_rectangle.php
squares are rectangles, but rectangles are not all square. Look at the definition of a rectangle in your text.