Question

Ширина прямоугольника одна пятая дациметров а длина 9 сантиметров Чему равен его периметр

Answer 1

1дм=10см
10*1/5= 2см ширина прямоугольника
(9+2)*2 = 36 см - периметр прямоугольника

Answer 2

Calculation of the Perimeter of a Rectangle

To find the perimeter of a rectangle, we need to know the length and width of the rectangle. In this case, the width of the rectangle is one-fifth of a decimeter (10 centimeters), and the length is 9 centimeters.

The formula to calculate the perimeter of a rectangle is:

Perimeter = 2 * (Length + Width)

Let's substitute the given values into the formula:

Perimeter = 2 * (9 cm + (1/5) * 10 cm)

Simplifying the expression inside the parentheses:

Perimeter = 2 * (9 cm + 2 cm)

Calculating the sum inside the parentheses:

Perimeter = 2 * 11 cm

Finally, calculating the product:

Perimeter = 22 cm

Therefore, the perimeter of the rectangle is 22 centimeters.