Question

Сколь­ко по­тре­бу­ет­ся ка­фель­ных пли­ток квад­рат­ной формы со сто­ро­ной 20 см, чтобы об­ли­це­вать ими стену, име­ю­щую форму пря­мо­уголь­ни­ка со сто­ро­на­ми 3 м и 4,4 м?

Answer 1

3*4,4=13,2
13м 20см=1320см
1320:20=66

Answer 2

Найдем площадь стены
3*4,4=13,2 м2
найдем площадь плитки
0,2*0,2=0,04м2
найдем число плиток
13,2/0,04=330 плиток

Answer 3

Calculating the Number of Tiles Needed

To calculate the number of square tiles needed to cover a rectangular wall, we can use the formula:

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

The area of the wall can be calculated by multiplying its length by its width. The area of one tile is simply the area of the square tile.

Given: - Side of the square tile = 20 cm - Dimensions of the rectangular wall = 3 m (300 cm) by 4.4 m (440 cm)

Calculation

1. Convert the dimensions of the rectangular wall to centimeters: - Length = 3 m = 300 cm - Width = 4.4 m = 440 cm

2. Calculate the area of the wall: - Area = Length * Width = 300 cm * 440 cm

3. Calculate the area of one tile: - Area of one tile = Side * Side = 20 cm * 20 cm

4. Use the formula to find the number of tiles needed: - Number of tiles = Area of the wall / Area of one tile

Let's calculate the number of tiles using the provided dimensions.

Calculation

1. Convert the dimensions of the rectangular wall to centimeters: - Length = 3 m = 300 cm - Width = 4.4 m = 440 cm

2. Calculate the area of the wall: - Area = Length * Width = 300 cm * 440 cm = 132000 cm^2

3. Calculate the area of one tile: - Area of one tile = Side * Side = 20 cm * 20 cm = 400 cm^2

4. Use the formula to find the number of tiles needed: - Number of tiles = Area of the wall / Area of one tile = 132000 cm^2 / 400 cm^2

Answer

The number of tiles needed to cover the rectangular wall is approximately 330 tiles.