Question

3. Для покрытия площадки перед домом размером 2м40см ×1м80см нужно закупить плитку. Размер одной плитки 30см×20 см. Сколько упаковок такой плитки нужно купить, если в одной упаковке 10 плиток? Останется ли лишняя плитка?

Answer 1

2м40см=240 см, 1м80см=180 см
площадь площадки перед домом S=240*180=43200 cм(квадратных, т е 2 вверху)
площадь плитки S2=30*20=600 см
S/S2=43200/600=72 (плитки понадобится)
то есть надо купить 8 упаковок, останется 8 лишних плиток.

Answer 2

1) 240*180=43200 см2 площадь площадки
2)30*20=600см2 площадь одной плитки
3) 600*10=6000 см2 ( площадь одной упаковки плиток)
4)43200: 6000=7,2 упаковок
 Потребуется 8 упаковок. Плитка останется для погрешности в укладке.

Answer 3

Calculating the Number of Tiles Needed

To calculate the number of tiles needed to cover the area in front of the house, we can follow these steps:

1. Calculate the Area of the Space: - The area to be covered is 2.4m × 1.8m.

2. Calculate the Area of One Tile: - The size of one tile is 0.3m × 0.2m.

3. Determine the Number of Tiles Needed: - Divide the total area to be covered by the area of one tile to find the total number of tiles needed.

4. Check for Remaining Tiles: - Check if there will be any leftover tiles after purchasing the required number of packages.

Let's proceed with the calculations.

Calculation Steps

1. Calculate the Area of the Space: - The area to be covered is 2.4m × 1.8m. - This gives us an area of 4.32 square meters.

2. Calculate the Area of One Tile: - The size of one tile is 0.3m × 0.2m. - This gives us an area of 0.06 square meters for one tile.

3. Determine the Number of Tiles Needed: - Divide the total area to be covered by the area of one tile: - 4.32 square meters ÷ 0.06 square meters per tile = 72 tiles.

Therefore, 72 tiles are needed to cover the area.

4. Check for Remaining Tiles: - Each package contains 10 tiles. - The total number of packages needed is 72 tiles ÷ 10 tiles per package = 7.2 packages.

Since the number of packages must be a whole number, 8 packages are needed to cover the area. This means there will be some extra tiles, as 8 packages will provide 80 tiles, which is more than the required 72 tiles.

Conclusion

To cover the area in front of the house, 8 packages of tiles are needed, and there will be 8 extra tiles remaining.