Question

Длина цветника прямоугольной формы в три раза больше ширины. Найдите площадь цветника, если периметр равен 72 метра.

Answer 1

S= 9 × 27 =243 кв. м.
вот и всё

Answer 2

2(3х+х)=72                S=9 х 27=243 кв.м
4х=36
х=9
3 х 9=27

Answer 3

Problem Analysis

We are given that the length of a rectangular flower bed is three times its width, and the perimeter of the flower bed is 72 meters. We need to find the area of the flower bed.

Solution

Let's assume the width of the flower bed is x meters. According to the given information, the length of the flower bed is three times the width, so the length would be 3x meters.

The perimeter of a rectangle is given by the formula: 2(length + width). In this case, the perimeter is given as 72 meters. We can set up the equation as follows:

2(3x + x) = 72

Simplifying the equation, we get:

2(4x) = 72

8x = 72

Dividing both sides of the equation by 8, we find:

x = 9

So, the width of the flower bed is 9 meters, and the length is three times the width, which is 27 meters.

The area of a rectangle is given by the formula: length × width. Substituting the values, we get:

Area = 27 × 9 = 243 square meters

Therefore, the area of the flower bed is 243 square meters.

Answer

The area of the rectangular flower bed is 243 square meters.