Question

В школе нужно покрасить 3 одинаковые доски ширина одной доски 2 м длина 4 м достаточно ли будет 3 банок краски по 2 кг в каждой если в каждый метр квадратный израсходуется 250 г краски

Answer 1

2*4=8 м2 площадь одной доски
8*3=24 м2 площадь всех досок
3*2=6 кг краски всего есть
24*0,250=6 кг краски нужно для покраски
Ответ: краски достаточно

Answer 2

Calculating the Amount of Paint Needed

To calculate the amount of paint needed to cover the three identical boards, we can follow these steps:

1. Calculate the Total Area of the Boards: - Each board has a width of 2 meters and a length of 4 meters. - The total area of one board is 2 * 4 = 8 square meters. - Since there are three identical boards, the total area to be covered is 8 * 3 = 24 square meters.

2. Determine the Amount of Paint Required: - Given that 250 grams of paint is required for each square meter, we can calculate the total amount of paint needed.

3. Calculating the Total Paint Required: - To find the total amount of paint needed, we can use the following formula: Total paint (in kilograms) = Total area (in square meters) * Paint consumption per square meter (in kilograms)

- Substituting the values: Total paint = 24 * 0.25 = 6 kilograms

Therefore, to paint the three identical boards, a total of 6 kilograms of paint will be needed.

Conclusion

Based on the given dimensions and paint consumption rate, 6 kilograms of paint will be sufficient to cover the three identical boards.