Rachel designs a square tablecloth. Each side of the tablecloth measures 6 feet. What is the tablecloth's area?

To find the area of a square, you would multiply the length of one side by itself.

So, in this case, for a square tablecloth with sides measuring 6 feet each:
Area = 6 feet * 6 feet = 36 square feet

Therefore, the tablecloth's area is 36 square feet.