Question

Для покраски 7,5 м2 пола израсходовано 1,5 кг краски. Сколько нужно краски для покраски пола в комнате размером 38,5м2. По действиям.

Answer 1

Х- необходимое количество краски для покраски 38,5 м2
7,5м2 - 1,5 кг
38,5 м2 - х кг
х=38,5*1,5:7,5=7,7(кг) - необходимо краски для покраски 38,5м2

Answer 2

Calculating Paint Needed for a Room

To calculate the amount of paint needed for a room, we can use the given information that 1.5 kg of paint is used to cover 7.5 m² of floor. We can then calculate the amount of paint needed for a room with a size of 38.5 m².

To find the amount of paint needed for the larger room, we can use the following formula:

Amount of paint needed = (Area of the larger room / Area of the smaller room) * Amount of paint used for the smaller room

Using the given information, we can calculate the amount of paint needed for the larger room.

Calculation

The amount of paint needed for the larger room is calculated as follows:

Amount of paint needed = (38.5 m² / 7.5 m²) * 1.5 kg

Amount of paint needed = 5.133 kg

Therefore, to paint a room with a size of 38.5 m², approximately 5.133 kg of paint is needed.

This calculation is based on the given information and the formula for finding the amount of paint needed for a larger area based on the amount used for a smaller area