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Mathematics 10 Online
OpenStudy (anonymous):

The rectangular floor of a storage building had a length of 25 yards and a perimeter of 90 yards. A construction crew knocked out one wall and extended the length of the floor by 10 yards. What was the area of the new floor? A. 750 yd2 B. 1400 yd2 C. 700 yd2 D. 500 yd2

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