The height of the room is 3 meters. How many cans of paint will be required to paint a 5 m long wall if one can is enough for 5 m2.

Let’s find the area of one wall in this room.
To find the area of a room, you need to multiply the height by the width.
3 * 5 = 15 (m²) – the area of one wall.
Let’s find the area of all walls in the room.
15 * 4 = 60 (m²) – wall area.
Let’s find how much paint is needed to paint the walls.
60: 5 = 12 (b) – paint will be required.
Answer: 12 cans of paint are required to paint the walls in the room.