Question

Садовый участок прямоугольной формы имеет длинну 30,2 м , в ширину - на 9,7 м меньше.Чему равна площадь этого садового участка ? Сколько надо заплатить за установку изгороди вокруг него , если 1 погонный метр изгороди стоит 250 р ., а установка одного метра стоит 50 р.?Вырази полученное число в тысячах рублей и округом до десятых .

Answer 1

Ширина = 30,2 - 9,7 = 20,5м

S = 30.2 * 20.5 = 619.1м

 

((250+50)*20,5*2) +30,2*2*(250+50) =  41*300 + 60,4*300 = 18 120 + 12 300 = 30 420 тыс. = 30,4 тыс.

Answer 2

Calculating the Area of the Garden Plot

To calculate the area of the garden plot, we can use the formula for the area of a rectangle, which is length × width. Given that the length of the garden plot is 30.2 meters and the width is 9.7 meters less than the length, we can calculate the area as follows:

Length of the garden plot: 30.2 meters Width of the garden plot: 30.2 - 9.7 = 20.5 meters

Now, we can calculate the area using the formula: Area = Length × Width

Area = 30.2 meters × 20.5 meters

Let's calculate the area.

Calculating the Area

The area of the garden plot is: Area = 30.2 meters × 20.5 meters = 620.1 square meters

So, the area of the garden plot is 620.1 square meters.

Cost of Installing the Fence

To calculate the cost of installing the fence around the garden plot, we need to find the perimeter of the garden plot and then multiply it by the cost per meter of the fence and the cost of installation.

Calculating the Perimeter

The perimeter of a rectangle can be calculated using the formula: 2 × (length + width).

Given: Length = 30.2 meters Width = 20.5 meters

We can calculate the perimeter using the formula: Perimeter = 2 × (Length + Width)

Calculating the Perimeter

Perimeter = 2 × (30.2 meters + 20.5 meters) Perimeter = 2 × 50.7 meters Perimeter = 101.4 meters

So, the perimeter of the garden plot is 101.4 meters.

Calculating the Total Cost

Now, we can calculate the total cost of installing the fence. The cost includes the cost of the fence and the cost of installation.

Given: Cost per meter of the fence = 250 rubles Cost of installation per meter = 50 rubles

Total Cost = (Cost per meter of the fence + Cost of installation per meter) × Perimeter

Calculating the Total Cost

Total Cost = (250 rubles/meter + 50 rubles/meter) × 101.4 meters Total Cost = 300 rubles/meter × 101.4 meters Total Cost = 30,420 rubles

So, the total cost of installing the fence around the garden plot is 30,420 rubles.

Therefore, the total cost of installing the fence around the garden plot is 30,420 rubles, rounded to the nearest tenth and expressed in thousands of rubles.