Question

Ширина прямоугольника равна 9 метров площадь прямоугольника равна 225 квадратных метров найти периметр этого прямоугольника ВОПРОС:как найти периметр этого прямоугольника,зная ширину и площадь?

Answer 1

Сначала можно найти длину:

S=ab
a=S/b
a=225/9=25 м(длина прямоугольника)

P=2(a+b)
P=2(25+9)=2*34=68 м
Ответ:68 м

Answer 2

А=9м (ширина)
S=225м² (площадь)
P-?

S=a·b           (b - длина)
225=9·b
b = 25
P=2a + 2b = 2·9 + 2·25 = 18+50 = 68 м. (периметр)
P=68 м

Answer 3

Finding the Perimeter of a Rectangle

To find the perimeter of a rectangle, you need to know the width and the area of the rectangle. In this case, the width of the rectangle is given as 9 meters, and the area is given as 225 square meters.

The formula for the perimeter of a rectangle is P = 2 * (length + width). Since we only know the width and the area, we need to find the length of the rectangle first.

To find the length, we can use the formula for the area of a rectangle, which is A = length * width. Rearranging the formula, we have length = A / width.

Let's calculate the length of the rectangle using the given information:

Step 1: Substitute the values into the formula: length = 225 / 9.

Step 2: Calculate the length: length = 25 meters.

Now that we know the length and the width of the rectangle, we can calculate the perimeter using the formula P = 2 * (length + width).

Step 3: Substitute the values into the formula: P = 2 * (25 + 9).

Step 4: Calculate the perimeter: P = 2 * 34 = 68 meters.

Therefore, the perimeter of the rectangle is 68 meters.