Question

Длина прямоугольника 65 см, ширина 1 дм 7 см. Найди периметр и площадь прямоугольника. СРОЧНО!!!!!!!!!!!!!!!!!

Answer 1

1 дм 7 см = 17 см
площадь = 17*65=1105 см 2
периметр = (17+65) * 2 = 82*2=164 см

Answer 2

1 дм 7 см= 17см
S(площадь) =65*17=1105
P(периметр) =2*65+2*17=164

Answer 3

Calculating the Perimeter and Area of a Rectangle

To find the perimeter and area of the given rectangle, we can use the following formulas:

1. Perimeter of a Rectangle: The perimeter of a rectangle is given by the formula: \[ P = 2 \times (length + width) \]

2. Area of a Rectangle: The area of a rectangle is given by the formula: \[ A = length \times width \]

Given: - Length of the rectangle = 65 cm - Width of the rectangle = 1 dm 7 cm

Calculating the Perimeter:

The perimeter of the rectangle can be calculated using the given length and width.

\[ P = 2 \times (65 \, \text{cm} + (1 \, \text{dm} \times 10 \, \text{cm} + 7 \, \text{cm})) \]

\[ P = 2 \times (65 \, \text{cm} + 17 \, \text{cm}) \]

\[ P = 2 \times 82 \, \text{cm} \]

\[ P = 164 \, \text{cm} \]

The perimeter of the rectangle is 164 cm.

Calculating the Area:

The area of the rectangle can be calculated using the given length and width.

\[ A = 65 \, \text{cm} \times (1 \, \text{dm} \times 10 \, \text{cm} + 7 \, \text{cm}) \]

\[ A = 65 \, \text{cm} \times (10 \, \text{cm} + 7 \, \text{cm}) \]

\[ A = 65 \, \text{cm} \times 17 \, \text{cm} \]

\[ A = 1105 \, \text{cm}^2 \]

The area of the rectangle is 1105 cm².