Question

Периметр парка,имеющего прямоугольную форму,4км.Длина парка 1200м.Найди площадь парка. помогите плизз

Answer 1

4 км = 4000 м

 

4000 = 2*(х + 1200)              х - ширина парка

 

2000 = х + 1200

 

х  = 2000 - 1200 = 800 м

 

Значит площадь парка равна  1200*800 = 960 000 кв м = 0,96 кв км

Answer 2

Calculation of Park Area

To find the area of a rectangular park, we need to know the length and width of the park. In this case, we are given the perimeter of the park, which is 4 km, and the length of the park, which is 1200 m.

Let's denote the width of the park as w.

The perimeter of a rectangle is given by the formula:

Perimeter = 2 * (Length + Width)

Substituting the given values, we have:

4 km = 2 * (1200 m + w)

To solve for the width, we can rearrange the equation:

1200 m + w = 2 km

w = 2 km - 1200 m

Now that we have the width, we can calculate the area of the park using the formula:

Area = Length * Width

Substituting the given values:

Area = 1200 m * (2 km - 1200 m)

To perform the calculation, we need to convert the units to be consistent. Let's convert 2 km to meters:

2 km = 2000 m

Now we can calculate the area:

Area = 1200 m * (2000 m - 1200 m)

Area = 1200 m * 800 m

Area = 960,000 square meters

Therefore, the area of the park is 960,000 square meters.