Question

Сколько надо рулонов обоев чтобы оклеить ими стену длиной 7 м и высотой 4 м если длина рулона равна 10 м а ширина 50 см

Answer 1

700см/50см=14 листов на всю стену
14листов*4м=56метров
56метров/10метров=5.6 рулонов

Answer 2

Calculating Wallpaper Rolls Needed

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

Total area to cover = Wall length * Wall height

Area covered by one roll = Roll length * Wall height

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

Given: - Wall length = 7 m - Wall height = 4 m - Roll length = 10 m - Roll width = 50 cm = 0.5 m

Let's calculate the number of rolls needed.

Calculation

1. Convert Roll Width to Meters - Roll width = 0.5 m

2. Calculate Area Covered by One Roll - Area covered by one roll = Roll length * Roll width - Area covered by one roll = 10 m * 0.5 m = 5 m²

3. Calculate Total Area to Cover - Total area to cover = Wall length * Wall height - Total area to cover = 7 m * 4 m = 28 m²

4. Calculate Number of Rolls Needed - Number of rolls needed = Total area to cover / Area covered by one roll - Number of rolls needed = 28 m² / 5 m² = 5.6 rolls

Answer

To cover a wall with a length of 7 m and a height of 4 m using wallpaper rolls with a length of 10 m and a width of 50 cm, you would need approximately 5.6 rolls of wallpaper.