Square Area:
A= side squared
A= (6.3)^2
A= 6.3 * 6.3
A= 39.69 feet squared
Rectangle Area:
A= length * width
A= (4.8)(8.2)
A= 39.36 feet squared.
The square rug with an area of 39.69 feet squared covers more a greater area.
Difference:
39.69 - 39.36= 0.33 square feet more
Hope this helps! :)