"Square feet" describes the size of a piece of surface that's being covered, like the size of a floor
covered 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".
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Use this formula to convert from square inches to square feet, : square inches x 0.00694 = square feet
Square roots.
Use this formula: square meters x 10.764 = square feet
it means to use your head and explain what you solved
Use this formula to get the answer: square feet / 43,560 = acres