Question

Участок земли прямоугольной формы обнесён 120- метровым забором .Одна сторона забор равна 20 метров.Какова площадь участка?

Answer 1

Так как одна сторона забора = 20м, то противоположная сторона тоже
равна  20м, потому что у прямоугольника противоположные стороны равны.
1) 20 + 20 = 40 (м) - две ширины забора
2) 120 - 40 = 80 (м) - две длины забора
3) 80 : 2 = 40(м) - длина забора по одной стороне участка.
4) 40 * 20 = 800 (м^2)
Ответ: 800 м^2 - площадь участка.

Answer 2

Calculating the Area of the Rectangular Land Plot

To calculate the area of the rectangular land plot, we can use the formula: Area = length × width.

Given that one side of the fence is 20 meters and the entire perimeter is 120 meters, we can calculate the length and width of the rectangular land plot.

Calculating the Length and Width of the Rectangular Land Plot

Let's denote the length of the land plot as L and the width as W. The perimeter of the rectangular land plot can be expressed as: 2L + 2W = 120.

We also know that one side of the land plot is equal to 20 meters: W = 20.

Using these two equations, we can solve for the length (L) and then calculate the area of the land plot.

Solving for the Length of the Land Plot

From the equation 2L + 2W = 120, we can substitute W = 20 to solve for L: 2L + 2(20) = 120 2L + 40 = 120 2L = 120 - 40 2L = 80 L = 80 / 2 L = 40

So, the length of the land plot (L) is 40 meters.

Calculating the Area of the Land Plot

Now that we have the length (L) and width (W) of the land plot, we can calculate the area using the formula: Area = length × width.

Area = 40 × 20 Area = 800

Therefore, the area of the rectangular land plot is 800 square meters.