Question

Прямоугольник длина которого равна 7 см а ширина на 2 см меньше длины .найди его периметр и вырази в дециметрах и сантиметрах

Answer 1

 1)7-2=5(см)ширина                                                                                              2) (7+5)*2=24(см)периметр                                                                                3)24см=2дм4см

Answer 2

Calculating the Perimeter of a Rectangle

To find the perimeter of a rectangle, we can use the formula:

Perimeter (P) = 2 * (length + width)

Given that the length of the rectangle is 7 cm and the width is 2 cm less than the length, we can calculate the perimeter.

Calculation

Using the given values: - Length (a) = 7 cm - Width (b) = 7 cm - 2 cm = 5 cm

We can now calculate the perimeter in centimeters and then convert it to decimeters.

Perimeter in Centimeters: P = 2 * (a + b) P = 2 * (7 + 5) P = 2 * 12 P = 24 cm

Perimeter in Decimeters: 1 decimeter = 10 centimeters 24 cm = 2 decimeters and 4 centimeters So, the perimeter in decimeters is 2.4 decimeters.

Therefore, the perimeter of the rectangle is 24 centimeters or 2.4 decimeters.