Ruchi measured the area of her kitchen as 2.81 x 10^4 square units. When she recorded the area, she wrote 2.8 x 10^4 square feet. Which statement about her labeling of the units is true?

2.8 to 10 ^ 4 square feet is the correct statement.

The statement that area of her kitchen is 2.81 x 10^4 square units is undefined, the unit can be inch, for example, and 2.8x10 square inches surely can not be area of the kitchen.