Question

стену с измерениями 3 1\2 м. и 2 4\5 м. необходимо оклеить обоями.ск.рулонов обоев длинной 13м. и шириной 50 см для этого необходимо?

Answer 1

Сначало надо 3,5*2,8=9,8м квадратных

потом 13*0,5=6,5,

9,8/6,5=1,5

1,5 рулона

Answer 2

Calculation of Wallpaper Rolls Needed

To calculate the number of wallpaper rolls needed to cover a wall with dimensions of 3 1/2 m and 2 4/5 m, we need to consider the length and width of the wallpaper rolls.

Given: - Wall dimensions: 3 1/2 m and 2 4/5 m - Wallpaper roll length: 13 m - Wallpaper roll width: 50 cm

To calculate the number of rolls needed, we can follow these steps:

1. Convert the wall dimensions to centimeters for consistency: - 3 1/2 m = 350 cm - 2 4/5 m = 280 cm

2. Calculate the area of the wall: - Wall area = Length × Width - Wall area = 350 cm × 280 cm

3. Convert the wallpaper roll width to centimeters: - 50 cm = 0.5 m = 500 cm

4. Calculate the area covered by one roll: - Roll area = Roll length × Roll width - Roll area = 13 m × 500 cm

5. Calculate the number of rolls needed: - Number of rolls = Wall area / Roll area

Let's perform the calculations:

1. Convert the wall dimensions to centimeters: - Wall dimensions: 3 1/2 m and 2 4/5 m - Wall dimensions in cm: 350 cm and 280 cm

2. Calculate the wall area: - Wall area = 350 cm × 280 cm = 98,000 cm²

3. Convert the wallpaper roll width to centimeters: - Wallpaper roll width: 50 cm = 500 cm

4. Calculate the area covered by one roll: - Roll area = 13 m × 500 cm = 6,500 cm²

5. Calculate the number of rolls needed: - Number of rolls = Wall area / Roll area = 98,000 cm² / 6,500 cm²

Therefore, to cover the wall with dimensions of 3 1/2 m and 2 4/5 m using wallpaper rolls with a length of 13 m and a width of 50 cm, you will need approximately 15 rolls.