Question

Помогите плиз: Рулон обоев имеет длину 10 м и ширину 50 см. Сколько нужно таких рулонов обоев, чтобы оклеить стену длиной 5 м и шириной 2 м?

Answer 1

S=a*b площадь
50 см=0,5 м

1) 10*0,5=5 м² площадь рулона площадь обоев
2)  5*2=10 м²  площадь стены
3) 10:5=2 рулона обоев требуется чтобы оклеить комнату.

Ответ 2 рулона

Answer 2

Calculating Wallpaper Rolls Needed

To calculate the number of wallpaper rolls needed to cover a wall, we can use the following formula:

Number of rolls = (Total area to cover) / (Area of one roll)

Given: - Length of wallpaper roll = 10 m - Width of wallpaper roll = 50 cm - Length of the wall = 5 m - Width of the wall = 2 m

First, we need to convert the width of the wallpaper roll to meters to ensure consistent units.

Converting Width of Wallpaper Roll to Meters

The width of the wallpaper roll is 50 cm, which is equal to 0.5 meters.

Calculating Area of One Roll

The area of one roll can be calculated by multiplying the length and width of the roll.

Area of one roll = Length of roll × Width of roll

Area of one roll = 10 m × 0.5 m = 5 square meters

Calculating Total Area to Cover

The total area to cover on the wall can be calculated by multiplying the length and width of the wall.

Total area to cover = Length of wall × Width of wall

Total area to cover = 5 m × 2 m = 10 square meters

Calculating Number of Rolls Needed

Now, we can use the formula to calculate the number of rolls needed:

Number of rolls = Total area to cover / Area of one roll

Number of rolls = 10 square meters / 5 square meters = 2 rolls

So, you would need 2 rolls of wallpaper to cover a wall with a length of 5 meters and a width of 2 meters.