Area of a square = side^2
In our problem,
One side of the larger square = 12ft
one side of the smaller square = 9ft
12ft^2 - 9ft^2
144ft^2 - 81ft^2 = 63ft^2
C is the correct answer choice.
63 ft
the area of her floor is 144 (12 × 12)
the area of the rug is 81 (9 × 9)
144 - 81 = 63
5.2m questions
6.7m answers