Question
Two rectangular mats, each 6 m by 9 m are placed on the floor as shown. The mats overlap and the area of the floor covered by the overlap is 15.0 m2. Find the length of BC.
3 m

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Two rectangular mats, each 6 m by 9 m are placed on the floor as shown. The mats overlap and the area of the floor covered by the overlap is 15.0 m2. Find the length of BC.