3-room
Calculate the area of a 3-room apartment, given that 2 rooms (a bedroom and a children's room) are the same size and each is a square with sides of 3 m. The living room is a rectangle with dimensions 4 m × 5 m. The area of the bathroom is one third of the area of the living room, and the area of the kitchen is 50% of the area of the living room. The remaining space is 6 m².
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