Question

Границы прямоугольного стадиона с трёх сторон обозначены заборам, а с четвёртой стороны-стеной спортивной школы длиной 80м. Найди площадь стадиона, если известно, что длина всего забора 280 м

Answer 1

Р=2(а+б)=280+80
S=a*б
Возьмём известную сторону за б=80 и подставим
2(а+80)=280+80
а=100
Тогда S=80*100=8000

Answer 2

Calculation of the Stadium Area

To find the area of the rectangular stadium, we need to know the length of the fourth side, which is formed by the wall of the sports school. The length of this side is given as 80 meters. We also know that the total length of the three sides formed by the fences is 280 meters.

To calculate the area of the stadium, we can use the formula for the area of a rectangle: Area = Length x Width.

In this case, the length of the stadium is the sum of the lengths of the three sides formed by the fences, which is 280 meters. The width of the stadium is the length of the fourth side, which is 80 meters.

Therefore, the area of the stadium can be calculated as follows:

Area = Length x Width = 280m x 80m = 22,400 square meters.

So, the area of the stadium is 22,400 square meters.

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