It could be many different sizes. An example would be a rectangle, 30 feet by 40 feet.
approximately 3.5 feet
around 570 billion square feet
You can cover an area of 24 square feet with 24 square feet.
350
It's the area covered by a square whose sides are each 1 foot long.
The answer will depend on the depth to which the area is covered.
"Square feet" describes the size of a piece of surface that's being covered, like the size of a floorcovered by carpet, or a yard covered by grass, or a wall covered by paint.You don't use square feet to describe a length or a distance, like a piece of rope, a broom handle,or a trip to the store. Those use "feet".You don't use square feet to describe how much something can hold, like a barrel, a bottle,a shopping bag, or a ballon when it's blown up. Those use "cubic feet".
A square yard covers, well, one square yard of ground. One could also say it covers nine square feet, or 1,296 square inches. A square yard is a measurement of area. It is not a measurement of the actual surface.
280 square feet.
It is 40,000 square feet.
220 square feet
10,763.9 square feet.