The square root of 64 is greater than the square root of 25; (square root sign) 64 > (square root sign) 25
It should be 81 square feet.
3 yards x 9 yards = 27 yards squares.
It asks for your answer in square feet, so you multiply by 3. This is because there are 3 feet in ever yard.
27 x 3 feet = 81 square feet.
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