Question

Пол комнаты, имеющий форму прямоугольника со сторонами 4 м и 10 м, требуется покрыть паркетом из прямоугольных дощечек со сторонами 5 см и 20 см. Сколько потребуется таких дощечек?

Answer 1

4 m * 10 m = 40 m² = 400 000 cm²

5 cm * 20 cm = 100 cm²


Количество дощечек = площадь пола / площадь одной дощечки = 400 000 см² / 100 см² = 4000 дощечек.

Answer 2

Calculating the Number of Parquet Tiles Needed

To calculate the number of parquet tiles needed to cover the floor, we can use the following formula:

Number of tiles = (Area of the room) / (Area of one tile)

The area of the room can be calculated as the product of its length and width, and the area of one tile is the product of its length and width.

Given: - Length of the room = 10 m - Width of the room = 4 m - Length of one tile = 20 cm = 0.2 m - Width of one tile = 5 cm = 0.05 m

Let's calculate the number of tiles needed step by step.

1. Convert the room dimensions to meters: - Length of the room = 10 m - Width of the room = 4 m

2. Convert the tile dimensions to meters: - Length of one tile = 0.2 m - Width of one tile = 0.05 m

3. Calculate the area of the room: - Area = Length * Width = 10 m * 4 m = 40 m²

4. Calculate the area of one tile: - Area = Length * Width = 0.2 m * 0.05 m = 0.01 m²

5. Calculate the number of tiles needed: - Number of tiles = Area of the room / Area of one tile - Number of tiles = 40 m² / 0.01 m² = 4000 tiles

Therefore, 4000 parquet tiles are needed to cover the floor. [[8 #]]