A rectangular carpet with 3 m and 4 m old lines covers 2/3 of the room’s floor area. What is the area of the room?

First, let’s calculate the area of the carpet. To do this, multiply the length of one side of the carpet by the length of the other side.
S = 3 m * 4 m = 12 m².
The area of the carpet is 2/3 of the floor area of the room. Let’s calculate the area of the floor, multiply the area of the carpet by 2/3.
Sп = 12 m² * 2/3 = 18 m².
Answer: the floor area is 18 m².