A warehouse had a square floor with an area of 10,000 square meters. A rectangular addition was built along one entire

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A warehouse had a square floor with an area of 10,000 square meters. A rectangular addition was built along one entire side of the warehouse that increased the floor by one-half as much as the original floor. How many meters did the addition extend beyond the original building?

(A) 10
(B) 20
(C) 50
(D) 200
(E) 500

Answer: C

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