Solve this problem.The area of a square is 81 square centimeters. If the same amount is added to one dimension and removed from the other, the resulting rectangle has an area 9 square centimeters less than the area of the square. How much is added and subtracted?
A. 12 cm
B. 9 cm
C. 3 cm
D. 4 cm
Answer: C
Mathematics
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A. 
B. 
C. 
D. 
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