Question

Маляр за 8 часов выкрасил 3 стены прямоугольной формы.Длина каждой стены 8м,ширина на 2м меньше длины.Какую площадь стены маляр красил за 1 ч, если работал с одинаковой производительностью? Можно условие и схему написать ПОМОГИТЕ ПОЖАЛУЙСТА .ЧТО ОЗНАЧАЕТ КАЖДОЕ ВЫРАЖЕНИЕ СОСТАВЛЕННОЕ ПО УСЛОВИЮ ЗАДАЧИ.1)8-2.2)8*(8-2).3)8*(8-2)*3.

Answer 1

8-2=6м ширина стены
6х8=48 - S стены
48х3=144 м2 - S 3х стен
144\8=18 м2 красил за 1 час маляр.
 по условию твоему:
1) 8-2=6
2)8х(8-2)=48
3)8х(8-2)х3=144

Answer 2

Problem Statement

Маляр за 8 часов выкрасил 3 стены прямоугольной формы. Длина каждой стены 8 м, ширина на 2 м меньше длины. Какую площадь стены маляр красил за 1 час, если работал с одинаковой производительностью?

Understanding the Problem

To solve this problem, we need to find the area of each wall and then determine the area painted by the painter in 1 hour. Let's break down the problem statement and understand the given information:

1. The painter painted 3 rectangular walls. 2. The length of each wall is 8 meters. 3. The width of each wall is 2 meters less than the length.

Now, let's calculate the area of each wall and the area painted by the painter in 1 hour.

Calculating the Area of Each Wall

To calculate the area of a rectangle, we multiply its length by its width. In this case, the length of each wall is 8 meters, and the width is 2 meters less than the length. So, the width of each wall can be calculated as (8 - 2) meters.

Therefore, the area of each wall is given by the formula: Area = Length x Width.

Substituting the values, we get: Area = 8 x (8 - 2).

Simplifying the expression, we have: Area = 8 x 6.

So, the area of each wall is 48 square meters.

Calculating the Area Painted in 1 Hour

The painter worked for 8 hours and painted 3 walls. To find the area painted in 1 hour, we need to divide the total area painted by the total number of hours worked.

The total area painted is given by: Total Area Painted = Area of Each Wall x Number of Walls.

Substituting the values, we get: Total Area Painted = 48 x 3.

Simplifying the expression, we have: Total Area Painted = 144 square meters.

Since the painter worked for 8 hours, the area painted in 1 hour is given by: Area Painted in 1 Hour = Total Area Painted / Number of Hours.

Substituting the values, we get: Area Painted in 1 Hour = 144 / 8.

Simplifying the expression, we have: Area Painted in 1 Hour = 18 square meters.

Therefore, the painter painted an area of 18 square meters in 1 hour.

Answer

The painter painted an area of 18 square meters in 1 hour.

Explanation of Expressions

1) 8 - 2: This expression represents the width of each wall, which is 2 meters less than the length. 2) 8 x (8 - 2): This expression calculates the area of each wall by multiplying the length (8 meters) by the width (2 meters less than the length). 3) 8 x (8 - 2) x 3: This expression calculates the total area painted by multiplying the area of each wall by the number of walls (3). 4) (8 x (8 - 2) x 3) / 8: This expression calculates the area painted in 1 hour by dividing the total area painted by the number of hours worked (8).